I just called Crucial to ask for a credit of the price difference (I ordered 2 of the 265Mb PC133 CAS2 on 1/23 for $135.99 each). The CSR first said they don't do this because of market fluctuation, yada yada. I asked her if I could return the package, and she went away for 20 secs and came back to offer me a $12 credit. I asked her again if I could return the package for a full refund w/o restocking fee (she said I'll have to pay shipping on the way back, but I told her I could refuse delivery since I haven't received it yet), and she went away for another 20 secs and came back to offer me a $20 credit. I was beginning to feel like buying a new car . Anyway, I got tired of the cat and mouse game, told her that I am going to get my money back one way or another, and asked to talk to a supervisor. She went away again, but this came back and finally gave me the full credit. I'd be sure to check my CC statement in the next few days. She said she had to fill out some paperwork, so perhaps that was the reason for her reluctance in the first place.
If you have just ordered yours before the pricebreak, call them up, can't hurt to try, but please be courteous to the CSR .