WordNet (r) 3.0 (2006):

overprice
    v 1: price excessively high

Moby Thesaurus II by Grady Ward, 1.0:

18 Moby Thesaurus words for "overprice":
   bleed, bleed white, clip, exploit, fleece, gouge, hold up,
   overcharge, overtax, profiteer, screw, skin, soak, stick, sting,
   surcharge, swindle, victimize