do you trade tennis racquets for either new ones or used as new if you have any? do you string them?

We take tennis racquets as either an outright buy (one third of what we retail the items for, in a check), or a trade in (one half of what we retail the items for, good for one year), or consignment (you set the retail price and receive a check for half of what you price the items for, when they sell). This is how we take in all sporting goods that we accept. We re-string racquets offsite and it costs $30.00.

I'm not sure if they trade but for string or restring call them .