Personally, I have never bought anything live off of eBay, I don't trust any of them. After reading some of the sellers adds, I did not get a warm and fuzzy feeling, some of the plants I looked at are being shipped from overseas, for us a no no. Next, the (Bartlett) pear it's being sold as a true name dormant "seedling". We all know that a seedling will NEVER be true to name, that is why named cultivars are grafted to rootstock, it's the only way to get a clone (exact copy) of the parent or mother tree.
I hope I'm wrong, but I would not buy from that seller.