i got mine on ebay for 56 dollars the pair. that includes shipping. they fit perfect and they work realy good too. id recommend them. just make sure it for the pair, cuz some want 32 just for one mirror. good luck. heres a link by the way:
http://cgi.ebay.com/ebaymotors/99-00-01-Pontiac-Grand-Am-Power-Door-Mirrors-Set-Pair_W0QQcmdZViewItemQQcategoryZ33649QQihZ006QQite mZ160173695277QQrdZ1QQsspagenameZWDVW