didawaywith  I buy from both the Mint and on ebay but NO I don't think I will EVER be a seller.

My purchases of Stamps,Coins & Notes are an investment for my Daughter, I am investing in her inheritance.

Like you I have also seen some auctions go past a BIN price too and I think to myself why do some individuals continue to bid for I can only put it down to they either get caught up in the thrill of the auction or they really want the item no matter what they have to pay for it, probably a bit of both.