Local tire store might do something like that, but then they have to resell or recycle the old ones, so they can't afford to pay much for them. Probably get more on eBay or Craigslist or buy sell forum on here.I think what hes looking for is someplace he can go in and just trade wheels, so hes not out of pocket too much up front.....
The only places i know of that do a rim "trade" type thing dont give you much for your wheels.