http://www.newegg.com/Special/ShellShoc ... 16&Index=1
The RM series was replaced by the RMi series, or was moved to the HXi series... Oh I forget. I actually had one of the Corsair techs explain to me how they moved all of the series up a notch in name but were really internals from another series.
Anyhow, for a Gold cert 550w Corsair RM series, I think $40 bucks is a damn fair price. It's a MIR which I've had good luck with when it comes to Corsair FWIW. Anyhow, if you don't need a lot of wattage, this would sure beat out paying close to the same for a CX(M)430 or equivalent.