If I'm honest £500 is a bit much, you could put it on Ebay at £500 BIN, but you'll obviously get stung by their fees etc. I think you'd be looking at £250-£350 if you started it off at 99p and let the market decide the value. Obviously you'll make more by splitting as the wheels will probably make £100 on their own (condition dependent) but it's always a bit of a risk as you might get stuck with some stuff.