Most valuable toy: Donatello Fan Club Edition ($1,000)
Original price: $4-$15
Selling for now: $3-$800

Many TMNT action figures have come off the assembly line over the years, and a few of them have become serious collectors items. All TMNT figures made between 1988 and 1997 are considered vintage, and as a general rule of thumb, the earlier they were made, the more valuable they are now. First edition "soft head" action figures often go for few hundred each in mint condition. Rare editions, such as the "Yellow Press/No Stripe" April O'Neil also routinely sell for a couple hundred dollars a piece.