Just thought of this as I was browsing for signature cards. When would a dealer, or any seller with a substantial investment, deem it necessary to offload product that won't sell at a certain price. Some sellers on e-bay seem to have been sitting on high-end cards for ages and not getting buyers. I know they have invested heavily over the years but when, if ever, might they just take what they can get at auction? Some have the "make an offer" thing going for mid range cards, but the ultra rare cards just don't seem to move. Do they sit and hope that a buyer crops up out of the blue every so often?