Something similar happened to me one time. I was at a used game store and the guy there had a bunch of games, one of which was strider. Dude wanted $15 for it, I thought that was pretty cool. It was under the counter and I said "I'd like Strider."
"We don't have it."
"Yes you do, its that one right there"
Well, there's no English on the cover so the store owner didn't even know what the game was. The guy said "Oh, that's strider?" Goes to his computer, checks ebay, then says "Sorry, it was mislabeled. That'll be $99.99"
Seriously though, Tonma for $150? Should've just taken that. Still not super cheap but waaaaay cheaper than you'll ever find on ebay.