I'm online looking at greenhouses. This is going to be our 9th year with our present greenhouse. The double-wall poly is becoming cloudier, but plants still grow well. They guarantee the poly for 10 years, so I am not planning much past that.
I would love to get a 4-season greenhouse, but for the size I want so we could enjoy it for growing and hanging out, we're talking a minimum of about $20,000 to $25,000 for the greenhouse, shipping, and installation. One of these 4 season ones would be too big of a project for us to install ourselves. (Actual gh is half this price; the rest is shipping, prep, and installation.)
I am leaning towards a Planta greenhouse, most likely the Sunglow. (Really 3 season; to make it 4 season would be a lot of retrofitting and modification.)
It's just a matter of size. If I put it in the yard, I would get a 10x19.5. ($3500) Water is nearby, and I already have electricity run to the old greenhouse.
If I put it down in the field, I would probably get a 10 x 32 ($4900), but then I would have to run electricity and water, an added expense.
At least we would be able to save on shipping (free) and we could install the Planta ourselves.