WordNet (r) 3.0 (2006):

market value
    n 1: the price at which buyers and sellers trade the item in an
         open marketplace [syn: market value, market price]

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "market value":
   account, asking price, bearish prices, bid price, book value,
   bullish prices, call price, closing price, conversion factor,
   decline, face, face value, fixed price, flash price, flurry,
   flutter, high, issue par, issue price, low, market price,
   net worth, nominal value, offering price, opening price, par,
   par value, parity, pennyworth, price, put price, quotation,
   quoted price, rally, rate, settling price, stated value, swings,
   value, value received, worth