I have found an awesome looking Ampeg B-15 at my Local Used music store and the price is $495. Is this a good deal? It is not the B-15N, it is just the B-15. The head looks good, speaker works, cabinet is in good shape, and the tubes fire up fine. I've got to go back and experiment with it but I don't know much about what price these vintage ampegs go for. Any help would be appreciated! I want it for the studio gigs I do as well as small, toned-down gigs too! What is the difference between the b-15 and the b-15n? Thanks guys!