THeres probably someone out there holding on until you need 1 last letter and "bam" $500 starting bid!
I remeber a few years back a mate of mine was at the "national" card convention in the US. Someone had 13 of the 97/98 UD Jersey Autograph MJ /23. DACW had one on their table with a price of something crazy like $20,000. When asked why so much, they said becuase when he has 22 he's gonna pay whatever I want!