You could probably get close to a full Peavey stack on the used market for that much.
Massive +1 to everyone saying the TNT is worth half that, at most, if in mint condition.
If you are ever unsure about a price, look on eBay as a rough guide:
http://www.ebay.com/itm/120993286844
Peavey TNT 115, newer model, looks to be in really good condition and a set price of $195.