A few guy's said PIC are so cheap why bother swapping them ?

Well not here in good old Adelaide Australia. Unless it's a VERY common PIC type like a 16F84 or 16F877 then you'd have to order a rail of them here. The LHS will not get just a couple of units in for you. Arrow is the PIC agent here in Oz, and they turned their back on the non-professional electronics market (so did every other Oz parts agency BTW).
I could go into a monologue about how they're dooming themselves by not supporting the hobbyist and students, but I won't.....
RS and Farknell are stupidly expensive too here for one chip or two.

None of my PIC projects are ever money earners, and I give away a lot of small PIC based gadgets to mates here too (RC airplane gadgets). So I like to get a bargain or scrounge as many parts as possible. Actually scrounging has become an Australian tradition to the electronics hobbyist here...

So if I was to start a thread called 'PIC swap market' (no sales) which forum is the better ?

PS. Also found some surplus 18F452's, 18F4620, 16F877 and some EEPROMs from 93LC46 to 93LC66 size in my parts box !