Well, that's not a bad avenue, it just seems to me $85 is a bit steep for used modules. Newegg was selling those recently for 45 each, but alas, they are not listed now. They have Infineon chips on the PC3200 now, although the Buffalo number is 433 rather than 400... But it would be crap shoot, and the CH5s should be fine for your application. So if you like the price and the trader, I don't see any reason not to get them.