Open your local yellow pages or get online and locate all of the skate shops in your area. Call the stores and ask about their policy of buying skateboards; some skate shops never buy skateboards, others only offer store credit, while other will offer cash for well-maintained, like-new skateboards. Make a list of the best candidates and set the list aside for later.
Examine the skateboard or skateboards you want to sell at a skate shop. Look carefully for scratches on the deck, tears in the grip tape, sand in the bearings, or any other signs of wear that may decrease its value. Make a list of all the issues you encounter; the list may help you when negotiating the final selling price. Replace any parts that are completely worn out, as skate shops will not be interested in buying a non-working skateboard.
Look at every component of the skateboard and take note of the brand name and model; these components include the grip tape, the deck, the wheels, the bearings and the trucks. Look at online catalogs to get an idea about the worth of each skateboard if the components were sold separately at retail cost. Take note of the approximate parts' value of the skateboards. Even though you shouldn't expect to receive this much from skate shops, it will at least give you more leverage when negotiating. Write down or type up the brand names and prices of the hardware for each board.
Schedule a time when you can come into a skate shop to show off your merchandise, if they express a willingness to buy. Lay out the skateboards with the bottom of the deck facing the shop owners. Give them a copy of the parts list, if they request it. Enter into negotiations for the selling price of the boards. Because most skate shops don't routinely buy skateboards from non-commercial entities, don't be surprised if the offered price is lower than the cost of the parts. Give yourself a day to think about an offer, if possible. Try all the skate shops on the list until you find the best deal.