In US Microsoft Store they're offering $100 for those that trade in their working PS3 though it can also be Xbox 360 models too.
What made me wonder is why Microsoft would want PS3s? Reuse the Blu-ray Players in PS3s for Xbox One?
I've got a PS3 60GB (PS2-BC) and a PS3 250GB Slim and I'm keeping both of them for different reasons (PS2-BC is awesome) so even if this were available in UK I wouldn't trade it in.
P.S.: I don't really want this to turn to a console war topic or be locked asap but rather try to understand what's their purpose behind getting PS3s.