The "Buy at" link

I've noticed that when a book is on both Amazon.com and Amazon.co.uk under the same ISBN, the Listal "Buy at..." link will be for one or the other. I hope this can be fixed so that both will be represented and we may order via the link to our own country. I've made a previous purchase where I wanted to buy via that link and support Listal in my own small way, but it was the UK Amazon page and I couldn't (I did for other parts of the order though). Also, I often use the link to check for the item's information and price - just to see - and I'll have to pull up the page manually on the US Amazon site.

I'm open to alternative views on this, but I think it'd be best to link to both the US and UK sites if possible. Of course, if the proceeds that go to Listal for say, a $100 purchase, were only .02 cents or something insignificant like that, it wouldn't be worth it from an economic standpoint. It'd still be nice just to be able to view either the US or UK pages straight from Listal.