>>Reep has some kind of price guide I think<<
On this I have exact Blue Book (Kelly).
1992 Tomos Golden Bullet TTLX
Retail, Private party - Blue Book $720.00(USD)
Approx Value yours..described condition $650.00(USD)
Trade-in, Dealer - Blue Book $390.00(USD)
Approx Value yours..described condition $330-350.00(USD)
I would reccommend squeezing him on the trade, if he wants to overprice the moped he's selling you, well then, he should overprice your trade, too.