does anyone have plans for a small halfpipe or quarter pipe like 4-5 feet or know where to get one for pretty cheap? I really want one but dont have a lot of money to spend.

Do a google search for Free Ramp Plans. I used to be into skating, and I was lookin for the same thing.

We used to build half pipe ramps alot when I was little...If you search for a ramp design it actually not that hard. And if you build it yourself you'll save alot of money, not to mention it's alot cooler to have one that you built yourself rather than a pre-fab ramp.

http://www.rampplans.org/ramps/Mark_Phillips/

2 quarters equal a half.