I bought a 4'x2'x7' tent off ebay, it's the guy from Cali... he has good stuff and very fair prices, think mine was $82.95 shipped and didn't take long to get it. Quality stuff from what I can tell. The black canvas type tent material is thick and very durable, it's got plenty of vents, passive slot flaps with screens plus a few 4 " and 6 " round re-enforced duct flanges at the top and the back. The zippers are excellent quality, my first impression was "damn, this thing looks pretty good" they are sewn in and appear to be a little over-sized if anything. Honestly, I didn't expect that much for eighty bucks but I was pleasantly surprised overall, the frame poles are metal and they're powder coated white, it has nice injection molded synthetic corner brackets and even came with one spare corner bracket,!
My tent arrived in a plain discrete box and inside was the regular box, opened it up and the tent kit even included a storage bag like they have with the folding chairs, pop up tents, etc.
I'm running cfls and a diy carbon filter and a 4" cent. fan that pulls about 180 cfm, absolutely zero odor now! Granted, it's only just completed week two of flowering but I swear my skunk plants reeked after they got the third set of leaves after germination. During the day if I was home I'd open the tent up and let the girls breathe, well without venting into the attic or whatever you could smell skunk from down the hall and round the corner. I can only imagine how pungent they will be saw around week five to eight of flowering. I have a shelf made to hold my 5 gallon pots on top for flowering, it's the larger of the two chambers. Under the shelf is where the clones and vegging is happening. I'm still struggling with nute temps, I just scored a cheap used mini fridge off craigslist for $30 and I'm going to tinker with it to help cool my nutes down to a safer level.
I don't regret buying my tent not one bit.