I hate to say it, but I am afraid to even buy from the sellers many of you say sell genuine bags. It is just a risk I don't want to take. I will remain bagless I suppose.
Tammy has a point, eBay is full of fakes. One needs to exercise full caution when buying these expensive bags from eBay. I found my thalassa birkin on eBay from this very nice chick that I end up being friends with.