200 will be hard to pull off, unless you can get most of your materials free. A box of screws will cost about 20-30 depending on what kind you use. Plus you need to make a stand.
If you are sitting at 200 firm, try craigslist.com and ebay for your area. If you live in the Down river area, you can surely pick up a nice tank for a dollar/gallon or less.
