It's ebay. Ebay produces crazy prices sometimes.

Point in fact: I sometimes sell cycling gear I pick up at local thrifts. Often they appear unworn, but I always advertise them as used. I sold a pair of Descente shorts for 110$ on ebuy; two bidders decided they had to have them, one entered an increment less than 110$, the other entered god knows what, both bidding in the last twenty seconds.

You can buy a new pair for less.