I've seen rtc/tsn I'd pay 100$+ for, some I wouldn't take if they were free. If it's nice like he says, then maybe it's worth it.
Size, temperament, diet, and PICTURES will all help the sale.
we need to see some pics of this hybrid of yours =] then we shall see if its worth the amount your placing the sale on it...if its just the same as the others hybrid then its should be sold at most $10-20