You could rebuy every year but it would be cheaper in the long run to cover the frame with conventional greenhouse plastic if the green one does indeed disintegrate. Regardless, I agree these pop up pollytunnle/hoophouse type greenhouses provide great value for the money.
Actually, I'm also buying a bigger greenhouse this year, and getting one that’s translucent to keep prying eyes out...these with the green thread in the plastic help somewhat with staying low key. I grow tomatoes and peppers on benches by the sidewalls to disguise my canna plants. The translucent ones you can't see thru at all. I'll use the old one mostly for veggies and seedlings this year