We have had our hfgh for at least 6 years, and it is doing great (with strengthening additions) . We think it will have to be replaced within a couple of years because of panel weathering, so when I saw the recent $199 coupon promotion for the greenhouse, I went and got one. That price is cheaper than I paid for it 6 years ago.
I'm one of those folks who think it is a great deal if you want a greenhouse.