I don't understand why sellers of such notes don't let the market decide.
Even in less than ideal market conditions-- the error collectors should be the ones who (in putting hard cash where their mouth is) determine the estimated worth of such an error. Afterall, it's not as if there are a lot of desirable notes up for sale these days. Why should an online auction be started at some inflated starting bid when you don't even get a chance to view the said item?
There has been mention of a possible brick or other such finds for the BTT/BTU $20 paper error. It occurs in 2 prefixes & others are beginning to surface. Unfortunately (like the fortunate few who had the 2003 BER hoard of notes) it seems as if such sellers are putting the horse before the cart in forcing the market value of such a rarity. They believe that dressing their sales up with all kinds of superlatives (such as "one of a kind!") will create a frenzy of buyers (& that all paper money collectors desire error notes!)
I believe most serious error collectors would prefer to have a "wait & see" approach or perhaps even dream that they will soon find such a rarity (an inside deal), before they would stomp all over the listing you mention. I may be wrong but I do believe most of us prefer to see a true auction style sale.
