I'm pretty sure it's called the Trade-In program now. If that's what your talking about. Basically selling your racquet to TW for store credit. You can call TW customer service about that and get a quote for how much your racquet is worth.
Racquet : TGK238.1 2X / Head YTPP 1X
Strings : BHB7 17G 49lb / LUX 4g Rough 17G