A Sellery Alternative Built for the OnBuy Marketplace

Sellery, from SellerEngine, is a real-time repricer with a strong reputation among Amazon sellers who want fine-grained control over pricing strategy. If you run a complex Amazon operation, that flexibility is the reason people pick it.

OnBuy is a different marketplace with a different fee model, a different offer-ranking behaviour and its own API. A repricer has to be connected to it to move your prices on it - so if you are evaluating tools, confirm current OnBuy support directly with the vendor rather than assuming multi-channel means every channel.

What repricing on OnBuy involves

Re-Pricer was written for this marketplace specifically:

• Delivered price, not list price. Item plus shipping is compared against each rival offer, since that is the number buyers weigh up.
• Fee-aware minimums. Category commission and VAT feed into the floor, so "never go below £12" means never go below £12 of actual margin.
• Out-of-stock handling. If the seller you were undercutting runs out, your price can rise automatically rather than staying low for no reason.
• Bulk rules with per-SKU overrides. Set a strategy across the catalogue, then pin the listings that need their own treatment.

Repricing runs as often as every 10 minutes on the 10,000-listing plan and above.

Running both

There is no prize for consolidating onto one tool. Sellers with real volume on both marketplaces often keep a specialist on each, and at £34.95/month for the entry plan the OnBuy side rarely changes the maths.

The quickest way to settle it is to run both for a week. Connect your OnBuy API key, import your catalogue, set a floor and a ceiling on your top twenty listings, and watch what happens to your position over a few trading days. Re-Pricer starts at £34.95/month with a 7-day free trial, and setup takes under a minute.