See exactly what happens
after you install
No surprises. WEM stays out of your way until you open a product page on Amazon or eBay UK — then it checks the same item across the retailers it covers and shows you if it’s cheaper elsewhere.
Headphones
Sony WH-1000XM5 Wireless Noise-Cancelling Headphones
£299.00
Add to basketSony WH-1000XM5 Headphones
eBay
£259.00
£40.00 less
Sony WH-1000XM5 Headphones
AliExpress
£274.99
£24.01 less
Sony WH-1000XM5 Headphones
Amazon
£289.00
£10.00 less
Price comparison by wem3.ai
Illustration of the WEM panel as it appears next to the retailer’s buy box.
How it works
Install & pin — 10 seconds
Add it to Chrome in one click, then pin it. No account, no sign-up, no setup screen to get through.
Shop exactly as you do now
The extension stays completely dormant until you open a product page on Amazon or eBay UK. It never runs anywhere else.
See cheaper prices, right on the page
WEM checks the same item across the retailers it covers and shows a small panel beside the buy box — with a savings banner only when something is genuinely cheaper.
Buy where it’s best
Click through to the cheaper retailer, or open the full comparison on WEM. Outbound links are affiliate-tracked and clearly disclosed — the price you pay is unchanged.
No catch
- Dormant until you shop — only activates on Amazon & eBay product pages.
- Free. No account, no sign-up, no personal data required to use it.
- Only speaks up when there’s a real saving — no constant pop-ups.
- Affiliate links are disclosed, and your price stays the same.