The fiberglass Atlanta hull is available from Strike Models for $120 plus shipping, brand new (shameless plug, as I'm the president of Strike Models, if you weren't aware of the connection yet). Battlers Connection has it for $125 plus shipping. We're the only two that I know of that offer the Atlanta hulls commercially.
Herr Turkey, not to be rude, but even if you can get a hull for $100 from someone, do you have the financial means to build a warship out of it? The hull alone is cheap compared to everything else involved. If the answer is 'no' or 'not right away', I'd really suggest saving your money until you have enough to build a complete warship.
