So there is an ebook I want to get and it appears to cheaper to buy the .mobi from the publishers in the us as opposed to amazon uk. If I do buy the mobi file can I add it to my kindle collection and will amazon still sync the book across my devices. I.e. the go to last read page feature in particular. I dont have a kindle but use the app on my phone tablet and pc if that makes a difference. Edit: So I have double checked and the price is actually the same. So this whole thread is moot. Oops.