Alright so I'm looking for my own little Fitness Machine, but I dont want to spend WAY too much money.

Basically looking for rowers, stairclimbers, ellipticals&tredmills(maybe) and such.
I already have a couple of weights.
I dont have very much room inside of my bedroom and that is where those are going.

I'm looking to slim my stomach and get some abs going on up in here :P

Any suggestions on whats and where to buy?