Pricing for 4Meg (and 2Meg) EPROMS is good.
4 Meg EPROMS, 100 nS (TI) $14-16 by December.
2 Meg approx half that.

80nS parts slightly more expensive, 120nS parts slightly less 
expensive. 

Current pricing for 1 Meg EPROMS is approx. $3.75 - $3.95