I just bought a tank on e-bay. It was a good transaction. The tank rocks!! It is true that most are pick up only, and if not the shipping can kill you. You really need to ask questions before you bid, ask about any damage, scratches,stains, or cracks in the hood and keep your e-mails. Read the feedback to see if anyone else has had a problem. And see if they have sold similar items and what the buyer had to say. And one thing I learned the hard way is to always get the shipping fee before you bid.
HTH