I'd steer clear of the scrap gold market unless you're going to be using it for adsense, and even then you won't make stellar money.
Refineries are paying such a small margin on gold now that scrap gold dealers are making aroung 9p per gram (9ct gold is over £7 per gram), so you have to shift huge volumes to make any reasonable money.
Unless you're a scammy tv company - they're paying around 50p per gram!!