I recently found this product. It looks like a fairly decent affordable alternative to a prowler.
Thats a nice find if you have international shipping problems.
I have one very similar without the high handle attachment: http://www.muscledriverusa.com/mdposlwadha.html
I still think if you go to craigslist and call a local welder you can get a much better deal.
Here is something I put together and has been working great...