I know - it sux. I have used the "ask seller a question" feature - most commonly, a book available (to this day) from the local Harley dealer (on order, takes a week) for about $32 plus tax someone was selling for $400, then 350...
I asked the seller the following question - "Um, I think you have a misprint in your ad you need to correct, these sell at the dealer for $32, and your price is $350. Just thought you'd like to know... "
Of course they never replied - it was then listed for $300 as "Genuine, new, factory manual, in original wrapping extremely rare, etc..."
Guess fishing must be pretty good... or not...