I've always wondered where AP is getting their material from....dude a 3/4" 4'x8' CDPVC sheet would cost me WELL over $200 at any supply store. I called literally every industrial plastic supply place in southern Wisconsin that I know of with no luck on a lower price.....and AP can turn around and sell a T8 for less than $200. It's just mind blowing.
Sometime I want to drive down to their headquarters in Iowa and go dumpster diving just to find out lol.