I just ordered a pre-mod from www.xmodd.com . This is my first transaction with them, but other people have said that they have had good experiences with them. Plus, it's probably the cheapest you will find it on the web, $255
I'm actually looking for a place that sells the DMS3 chip with wires presoldered to it. All you have to do is solder the other ends of the wires to the PS2 mainboard. Any such site exist?