Bought this copy of BOO at a record store a few years ago. Didn't notice the gold promotional stamp in the top left corner. Tried to find some info on it, and nothing popped up on Google. Was hoping one of you guys would know.

I got one as well I don´t remember what the value is, tho´....

Promo copies are just the same value as a regular vinyl record. Condition is the thing, the cover looks to be showing lots of edge wear and ring wear from the record edge. If it was a white label test pressing promo it would be worth a few £$$£$£$ but i'd say about £15 / $20 in this state.