If you're that budget conscious, try looking on freecycle.org and craigslist for tank packages. I got my first 30 gallon for free on freecycle. I used it for years before upgrading.
You can also check your lfs
for used or new tanks. You'll pay through the nose for shipping.
I don't consider fishkeeping an inexpensive hobby. You might want to price out everything you'll need before you buy anything. It adds up quickly when you're first starting out.
Where in NY are you? Anywhere near the Danbury, CT area?
75: blood parrots, featherfin cat, emperor tetras, turquoise rainbowfish, BN plecos, japanese trapdoor; 46: WCMM, gold inca snails, ghost, bamboo & amano shrimp, kuhli loaches, rummynose & ember tetras, endlers, platies, flame gourami, guppies; 16: pygmy, peppered, loxozonus corys, otos, assassins, RCS ... ~ Research PRIOR to purchase.... ~