I have an opportunity to by a '99 Ampeg 810-en. The good ol' OSB years. He wants $300-$400. I haven't played it yet, but it seems like a deal of a lifetime even if it has that muddy sound - given the fact I've read plenty about swapping out Jensen mod10s. Its also road worn with torn tolex on one side..is it worth it? Could I get it for less, or am I getting greedy?