Tino's is probably cheaper then the one I am about to list but here is the list..
1 - 1/2" x 36" Black Iron Pipe
1 - 1/2" x 12" Black Iron Pipe
1 - 1/2" Pipe Clamp (red in color)
4 - 1/2" x 18" Black Iron Pipe (these are the legs)
3 - 1/2" x 10" Black Iron Pipe (two of them extend out from the main shaft
*3rd* is the arm for the pipe clamp)
4 - 1/2" Black Iron Pipe Tees (3 of them are for the base assembly 4th is for
the arm)
Optional -
4 - 1/2" Black Iron Pipe End caps for the legs
1 - 90 degree elbow.
*3rd* I will note that on my original was with the 10" piece. However I found pedal clearance was not sufficient so I went and bought a 18" piece. I took the extra 10" piece and put it on top of the 12" piece with the elbow attachment for extra support with a bungy cord. Now to save you some dough an easy way to get your 18" extension is to take one of the legs that face in the back and swap it out with the 10" arm. Here is a thread I already posted some pics of it, they should be toward the bottom.
http://forums.bicycletutor.com/thread-47.html
The cost of mine was $64.18 from Lowes. Now I am sure if you know a plumber, electrical worker (industrial), HVAC repairman, etc you probably could find the parts you need from their scrap. If you are going to out right buy then call around for prices as I did. Oh I went with the Black Iron instead of Galvanized because it was cheaper in price. Yes it can fold up if you unscrew the legs 1/2 turn vertical. Any other question please do asked
*** Thank you Tino for starting this thread

***