I was in the market for PC133 RAM 256MB, so I went to Pricewatch.com and watched and waited. The price weeks ago was $75, then dropped about .50 per day. At current it is at $67. Sounds like a good deal? Try calling some of these vendors that advertise their RAM at this cheap price. They don't know the difference between CAS 2 and CAS 3 is, they don't know what ns the RAM is, and their return policy is usually not listed on their partially functioning web site. I don't want to have my computer down waiting to exchange RAM chips, be accused of damaging them or misinstalling them, only to have them send me similar chips back in exchange.
I paid a bit more for assured quality from Crucial. Mushkin RAM was also considered, and is also considered very good. Before any of you go off purchasing cheap ram, thinking all will be well, consider what might happen if it doesn't.