I agree that these are lovely boots (soft leather, stunning colours, great design), but FLY sizing is notoriously odd at the best of times.
An Amazon 8 as listed here is a 41, which actually fits more like a 40! The leg too is narrow,and the height of these boots 'cuts off' the leg making your leg look odd and wide. Would suit very skinny legs only.
I absolutley love FLY boots, but ordering from Amazon is going to be hit and miss on sizing unless you are TOTALLY sure on what size you need (and are getting - Amazon should list the continental sizing too I feel).
Perhaps try on locally if you can first? Its a lot of money to get the wrong size and be disappointed.