Greasy Fork is available in English.
Adds eBay markup price, direct link to Amazon product page, eBay search by title, ThePriceGeek search by first 10 words of title, Amabay search by title. However over price to see minimum eBay price to profit $2 by dropshipping with Prime.
That sucks. I never use the UK site, so I don't know if I'll ever fix it. If you can figure it out, you could fork it.
Not working at all seems like, amazon done redesign?
Shows price in dollars on amazon.co.uk
See main price vs right hand side. Same number; different symbol.
http://imgur.com/a/GkbzZ