Does anyone know how much c-section metal will cost? im trying to build a wrestling ring and i found a site...

im trying to build a wrestling ring and i found a site that explains it. i need profoundly of this c-section metal, but i dont know how much its gonna cost. here is a link if you don't know what i imply.
http://www.hvwaonline.com/special/ringpl...
Do it yourself cable running.upstairs -> downstairs?
Answers:    about 0.40 - 0.60 per pound.
It would be easier to produce it out of wood.
How Do I Sew My Jeans?[5 pts]?
I don't think you are going to find any of this matter commercially available. You are going to have to find a substitute.