Wow, BT took quite a hit on this. I'm shocked.
I don't base what I feel comfortable selling an item for on what I paid for it. I always expect to "lose" money if I ever end up selling anything, because I never look at anything as an investment. I also don't only ever hold out for the best deals on something I'm interested in and am glad to pay a premium if an item deserves it and my interest is high enough. You just won't see me paying octuple regular eBay selling prices (aka regular eBay asking prices) for something, just so that I don't have to wait to have it.
Since you closely monitor the market sections of the forum, you shouldn't be shocked by this at all.