if you shop around you can get a UPVC for about £350 fitted and a composite for about £550, if you go with a “national company” you’ll get stung big time
I take it that it wasn’t signed for if it went over the fence ? if so claim another one off the supplier and blame Parcel Farce for failing to deliver it
Thing about the Go Outdoors “amazing deals” is that theres sod all worth buying, thats unless you’re either 30 stone and 7ft tall or can get on all the kids rides at Alton Towers without ducking.