Why would you be selling your PS3 anyways? It is one of the cheapest Blu-Ray players out there. Sure, there are cheaper ones, but they exclude many things that would not make it worth the purchase (no ethernet, no upgrade). I think Samsung or some other company is releasing a fairly comparable BD Player, but I remember seeing that it was roughly the same price as a PS3.
I'll be selling my PS3 soon, but holding onto most of my Blu-rays.
Think I should look into a cheap player, or wait and see if the next xbox has blu support?
Ah, you choice though. I'm with the others in saying that you shouldn't hold your breath for a Blu-Ray Xbox 360. If you are talking about the "next" Xbox, then I wouldn't know. My guess is that they might include it, but you are going to wait another 3-5 years until it comes out (my guess obviously).