What format does OnBuy use for product feeds?

OnBuy uses a CSV product feed. OnBuy is the UK's fastest-growing marketplace with 35 million products. Trajekt generates this format automatically from your Shopify, WooCommerce, Magento, or BigCommerce store — with daily automated updates and no manual uploads.

How often should I update my OnBuy product feed?

Daily updates are recommended for OnBuy. This ensures prices, availability, and new products are kept current. Trajekt automates this on a daily or twice-daily schedule.

Does Trajekt support this channel alongside others?

Yes. Trajekt generates feeds for OnBuy and 11+ other channels from the same store connection. One connect, all channels updated automatically.

🇬🇧 OnBuy UK

Get your products on the UK's fastest-growing marketplace

OnBuy is a UK-founded, UK-focused marketplace with 38 million products and growing. Unlike Amazon, OnBuy charges no listing fees and doesn't sell its own products. Trajekt generates the correct OnBuy CSV format from your Shopify or WooCommerce store.

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✓ OnBuy UK native✓ No listing fees✓ Inventory sync daily✓ Google Pay & PayPal buyers

OnBuy Product Feed

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OnBuy CSV format

Trajekt generates the correct OnBuy seller CSV with required fields: product name, condition, price, quantity, EAN/barcode, brand, and category mapping.

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EAN matching

OnBuy matches products via EAN barcode to existing catalogue entries. Trajekt maps your product barcodes to EAN fields for accurate catalogue matching.

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Competitive pricing

Set OnBuy-specific pricing rules in Trajekt — add a margin, apply minimum prices, or use your standard pricing. OnBuy's price comparison feature rewards competitive prices.

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Inventory sync

Trajekt syncs your stock levels daily from Shopify or WooCommerce to OnBuy — preventing overselling across channels.

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Category mapping

OnBuy uses its own category taxonomy. Trajekt maps your product categories to the correct OnBuy department and category codes.

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Daily updates

New products, price changes, and stock updates pushed to OnBuy daily from your live store data.

OnBuy feed format reference

Format: CSV. Key fields Trajekt generates from your Shopify or WooCommerce product data.

Field	Example value	Notes
opc	BARB-BEAU-NAV-XL	OnBuy Product Code — your unique SKU
ean	5055329871234	EAN-13 barcode — required for matching
condition_id	1	1=New, 2=Used — Like New, 3=Used — Good
price	279.00	VAT-inclusive GBP price
stock	15	Available stock quantity
delivery_template_id	12345	Your delivery template ID from OnBuy seller panel
product_description	Heavyweight waxed cotton jacket.	Appended to OnBuy product listing

Frequently asked questions

OnBuy is a UK-founded online marketplace launched in 2016. Unlike Amazon, OnBuy doesn't sell its own products — every item is sold by third-party merchants. OnBuy charges no listing fees, only a commission on sales (typically 5-9% depending on category). It focuses exclusively on the UK market with 5 million+ registered buyers.

OnBuy uses a CSV template for bulk product uploads through the OnBuy Seller Portal. The CSV includes: product name, EAN/barcode, condition, price, quantity, brand, category, description, and image URLs. OnBuy also supports API integration for automated listing management.

OnBuy has a product catalogue similar to Amazon's ASIN system. When you upload a product with an EAN barcode, OnBuy attempts to match it to an existing catalogue entry. If matched, your listing is attached to that catalogue product. If not matched, OnBuy creates a new catalogue entry. Accurate EAN/barcode data is essential for correct catalogue matching.

OnBuy commission rates vary by category: electronics typically 5%, fashion 8-9%, sports & outdoors 7%, home & garden 8%. OnBuy charges no monthly fee or listing fee — only a percentage of each completed sale. This makes it low-risk to list your entire catalogue.

Yes — OnBuy is growing fast in the UK as an Amazon alternative. Its no-listing-fee model means low risk to list. It attracts price-conscious UK buyers and has partnerships with Google Shopping and cashback sites. For merchants already selling on Amazon, OnBuy is a natural complement with minimal additional setup effort.

The underlying product data is the same, but OnBuy and Amazon use different CSV formats and category structures. Trajekt can generate both OnBuy and Amazon feeds from the same source data — connect once and output to multiple marketplaces.

OnBuy is currently UK-only. All listings are in GBP and target UK buyers. There is no international expansion announced yet, making it exclusively a UK channel.

Register at onbuy.com/sellers. Choose a subscription plan (Lite, Standard, or Advanced). Verify your business details. Then list products via CSV upload through the Seller Portal or via the OnBuy API. Trajekt generates the CSV automatically from your Shopify or WooCommerce store.

OnBuy requires product images on a white or plain background. Minimum 500x500px. Multiple images are supported and recommended. Images cannot contain promotional text, watermarks, or borders. Requirements are similar to Amazon.

OnBuy offers promoted listings and marketing opportunities through its seller portal. However, organic search visibility depends primarily on price competitiveness and listing quality — making accurate, complete product data from Trajekt directly important for performance.

OnBuy sellers must comply with UK Consumer Contracts Regulations — 14-day right of return. OnBuy provides a disputes process for buyer-seller disagreements. Your returns policy must be clearly stated in your seller profile.