{
 "slug": "letter-writing-sets",
 "name": "Letter Writing Sets",
 "root": "office-school",
 "unit": "pair",
 "unit_as_designed": null,
 "unit_note": "Count complete mailing pairs: the lower of the number of letter sheets and envelopes included. For multipacks, multiply each count by the number of sets; if no envelopes are included, the quantity is zero.",
 "gpc": {
  "brick_code": "10001228",
  "brick": "Writing/Design Implements/Aids Other",
  "class": "Writing/Design Implements/Aids",
  "family": "Stationery/Office Machinery",
  "segment": "Stationery/Office Machinery/Occasion Supplies"
 },
 "google_product_category": null,
 "taxonomy": {
  "gpc": {
   "brick_code": "10001228",
   "brick": "Writing/Design Implements/Aids Other",
   "class": "Writing/Design Implements/Aids",
   "family": "Stationery/Office Machinery",
   "segment": "Stationery/Office Machinery/Occasion Supplies"
  }
 },
 "fields": [
  {
   "key": "letter_sheet_count",
   "label": "Letter sheets",
   "type": "number",
   "unit": "sheet",
   "values": null,
   "why_it_matters": "More sheets provide more opportunities to write."
  },
  {
   "key": "envelope_count",
   "label": "Envelopes",
   "type": "number",
   "unit": "each",
   "values": null,
   "why_it_matters": "The number of envelopes limits how many letters can be mailed."
  },
  {
   "key": "matching_envelopes",
   "label": "Matching envelopes included",
   "type": "boolean",
   "unit": null,
   "values": null,
   "why_it_matters": "A complete set needs envelopes that fit the included letter sheets."
  },
  {
   "key": "paper_size",
   "label": "Paper size",
   "type": "enum",
   "unit": null,
   "values": [
    "mini",
    "standard",
    "large"
   ],
   "why_it_matters": "Size affects writing space and whether the set suits conventional correspondence."
  },
  {
   "key": "paper_weight_gsm",
   "label": "Paper weight",
   "type": "number",
   "unit": "g/m\u00b2",
   "values": null,
   "why_it_matters": "Heavier paper generally feels sturdier and is less prone to show-through."
  },
  {
   "key": "design_count",
   "label": "Distinct designs",
   "type": "number",
   "unit": "design",
   "values": null,
   "why_it_matters": "Multiple designs add variety across letters."
  }
 ],
 "minimum_spec": {
  "description": "A usable set includes at least five letter sheets and five matching envelopes, with paper large enough for ordinary correspondence. Mini sets are suitable only when compact notes are the intended use.",
  "rules": [
   {
    "key": "letter_sheet_count",
    "op": ">=",
    "value": 5
   },
   {
    "key": "envelope_count",
    "op": ">=",
    "value": 5
   },
   {
    "key": "matching_envelopes",
    "op": "true",
    "value": true
   },
   {
    "key": "paper_size",
    "op": "in",
    "value": [
     "standard",
     "large"
    ]
   }
  ]
 },
 "premium_dimensions": [
  "letter_sheet_count",
  "envelope_count",
  "paper_size",
  "paper_weight_gsm",
  "design_count"
 ],
 "baseline": null,
 "items": [],
 "unranked_items": [
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   "id": 177198,
   "name": "Daiso Hide-and-Seek Letter Set Cake and Santa",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
    "envelope_count": null,
    "matching_envelopes": null,
    "paper_size": null,
    "paper_weight_gsm": null,
    "design_count": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": false,
   "tier": "basic",
   "premium_note": null,
   "best": null,
   "lowest_price": {
    "price": 110.0,
    "retailer": "daisonet",
    "url": "https://www.daisonet.com/products/4550746014664"
   },
   "size_missing": true,
   "unranked_reason": "size_missing",
   "offers": [
    {
     "retailer": "daisonet",
     "retailer_id": "15350590669172",
     "gtin": null,
     "price": 110.0,
     "currency": "JPY",
     "price_usd": 0.726,
     "unit_price": null,
     "availability": "OutOfStock",
     "in_stock": false,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": null,
     "url": "https://www.daisonet.com/products/4550746014664",
     "observed_at": "2026-10-09T10:44:53-04:00",
     "age_minutes_at_build": 18821
    }
   ],
   "url": "/items/177198.json",
   "html": "/items/177198.html"
  },
  {
   "id": 177199,
   "name": "Daiso Landscape Letter Set Snowy City",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
    "envelope_count": null,
    "matching_envelopes": null,
    "paper_size": null,
    "paper_weight_gsm": null,
    "design_count": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": false,
   "tier": "basic",
   "premium_note": null,
   "best": null,
   "lowest_price": {
    "price": 110.0,
    "retailer": "daisonet",
    "url": "https://www.daisonet.com/products/4550746014657"
   },
   "size_missing": true,
   "unranked_reason": "size_missing",
   "offers": [
    {
     "retailer": "daisonet",
     "retailer_id": "15350590439796",
     "gtin": null,
     "price": 110.0,
     "currency": "JPY",
     "price_usd": 0.726,
     "unit_price": null,
     "availability": "OutOfStock",
     "in_stock": false,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": null,
     "url": "https://www.daisonet.com/products/4550746014657",
     "observed_at": "2026-10-09T10:44:53-04:00",
     "age_minutes_at_build": 18821
    }
   ],
   "url": "/items/177199.json",
   "html": "/items/177199.html"
  },
  {
   "id": 177200,
   "name": "Daiso Letter Set Bunny Convenience Store",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
    "envelope_count": null,
    "matching_envelopes": null,
    "paper_size": null,
    "paper_weight_gsm": null,
    "design_count": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": false,
   "tier": "basic",
   "premium_note": null,
   "best": null,
   "lowest_price": {
    "price": 110.0,
    "retailer": "daisonet",
    "url": "https://www.daisonet.com/products/4987646348634"
   },
   "size_missing": true,
   "unranked_reason": "size_missing",
   "offers": [
    {
     "retailer": "daisonet",
     "retailer_id": "15300260495732",
     "gtin": null,
     "price": 110.0,
     "currency": "JPY",
     "price_usd": 0.726,
     "unit_price": null,
     "availability": "InStock",
     "in_stock": true,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": null,
     "url": "https://www.daisonet.com/products/4987646348634",
     "observed_at": "2026-10-09T10:45:15-04:00",
     "age_minutes_at_build": 18821
    }
   ],
   "url": "/items/177200.json",
   "html": "/items/177200.html"
  },
  {
   "id": 177201,
   "name": "Daiso Letter Set Fluffy Bear",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
    "envelope_count": null,
    "matching_envelopes": null,
    "paper_size": "mini",
    "paper_weight_gsm": null,
    "design_count": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": false,
   "tier": "basic",
   "premium_note": null,
   "best": null,
   "lowest_price": {
    "price": 110.0,
    "retailer": "daisonet",
    "url": "https://www.daisonet.com/products/4550480965123"
   },
   "size_missing": true,
   "unranked_reason": "size_missing",
   "offers": [
    {
     "retailer": "daisonet",
     "retailer_id": "15300102422900",
     "gtin": null,
     "price": 110.0,
     "currency": "JPY",
     "price_usd": 0.726,
     "unit_price": null,
     "availability": "OutOfStock",
     "in_stock": false,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": null,
     "url": "https://www.daisonet.com/products/4550480965123",
     "observed_at": "2026-10-09T10:45:24-04:00",
     "age_minutes_at_build": 18821
    }
   ],
   "url": "/items/177201.json",
   "html": "/items/177201.html"
  },
  {
   "id": 177202,
   "name": "Daiso Letter Paper Mickey & Friends",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
    "envelope_count": null,
    "matching_envelopes": null,
    "paper_size": null,
    "paper_weight_gsm": null,
    "design_count": null
   },
   "standard_attributes": {},
   "shopify_category_id": null,
   "meets_minimum_spec": false,
   "tier": "basic",
   "premium_note": null,
   "best": null,
   "lowest_price": {
    "price": 110.0,
    "retailer": "daisonet",
    "url": "https://www.daisonet.com/products/4550480704845"
   },
   "size_missing": true,
   "unranked_reason": "size_missing",
   "offers": [
    {
     "retailer": "daisonet",
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     "gtin": null,
     "price": 110.0,
     "currency": "JPY",
     "price_usd": 0.726,
     "unit_price": null,
     "availability": "OutOfStock",
     "in_stock": false,
     "seller": null,
     "first_party": null,
     "shipping": null,
     "size_text": null,
     "url": "https://www.daisonet.com/products/4550480704845",
     "observed_at": "2026-10-09T10:45:33-04:00",
     "age_minutes_at_build": 18820
    }
   ],
   "url": "/items/177202.json",
   "html": "/items/177202.html"
  },
  {
   "id": 177203,
   "name": "Daiso Letter Paper Mickey",
   "brand": "Daiso",
   "gtin": null,
   "category": "letter-writing-sets",
   "size": {
    "value": null,
    "unit": "pair"
   },
   "size_as_extracted": null,
   "unit_price_unit": "pair",
   "specs": {
    "letter_sheet_count": null,
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    "paper_weight_gsm": null,
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   "standard_attributes": {},
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    "retailer": "daisonet",
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   "unranked_reason": "size_missing",
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     "price": 110.0,
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     "in_stock": false,
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     "age_minutes_at_build": 18820
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   ],
   "url": "/items/177203.json",
   "html": "/items/177203.html"
  }
 ],
 "n_items": 6,
 "n_priced": 0,
 "url": "/categories/letter-writing-sets.json",
 "html": "/categories/letter-writing-sets.html"
}