SKX is correct. The big tops and army surplus stuff starts at a grand.
The canopy I have came from
Tarpman and is considerably less expensive. I have maybe $600 invested in all the canopy parts that I own. If you purchase a tarp and fitting, you will need to go to Home Depot, Lowes, or (fill in the blank) and get the electrical tubing.
I can make a 20x40, 20x20 and 20x10, but not all at the same time. I need a few fittings and pipe.
I will have the 20x40 and the 20x20 next year ... Funny how the 20x20 area that we had last year looked way too small this year.