A local shop does mine for $20 per set of 4, plus disposal fee and valve stems. Works out to $35 total, but I only trust them with my Blizzaks and steelies.

1998 Silver Frost SVT Contour born on...8/28/01[/i]
American Iron Shootout Radial Tire 2 Class Champion, Cecil County Dragway April 20, 2002