I went to check on the figs this morning and they are perfect. It was pretty toasty in there. I might have not needed the heater which was small and doesn't work well to begin with.
I am planning on getting a real greenhouse in the fall but for the money this isn't bad for now.
@Dieseler- No anchors yet. I just got it yesterday for the hard freeze. I wedged my heavy 25 gallon pots in each corner and it didnt move even with 35 mph wind. It was also pretty sturdy for a cheapo greenhouse. It has a metal frame that I plant to screw into some 4x4 posts made into a rectangular frame.
@Remp- I am going today to buy wood for the frame and also a thermometer to see the temperature difference.
@go4broek- It actually feels pretty durable. I am going to use it this season till I get my big greenhouse.
@armando93223- I think it is worth it. It's actually better than I thought it would be.