I paid about $200 for mine, because I waited until the off-season price drops. I probably spent another $250 on it with the window, ply, insulation, wood preserver (pointless, just paint it. It didn't stop the roof rotting), caulk, brackets, vents, glue and anything else I can't think of. I wish I could think of a way to make the access door the whole width of the side. I think it would be too risky to cut out though. I don't want to have to go through all this again!
Did you say how big yours is? Mine turned out to be 7sqft.
Did you say how big yours is? Mine turned out to be 7sqft.