After surfing around for a few hours I found these online recordshops that sell Cro-Mags CD's, Tapes and LP's:
Abby Road
AB CDs
Blockbuster
CD Banzai
CD Connection
CD Universe
CD Teleshop
CD USA
CD World
Compact Discovery
Emusic
Mass Music
Music Boulevard
Music Mail Express
Music Spot!
Pentagon
Tele CD
Tower Records
Tunes CD’s (also used ones, incl. really old EP’s)