we bought one last year put it up this year only to brake one of the plasic T joints but have put a pice if wood in the hole to holed it together It blowes about a bit in the wind
Personaly i'd put a wonted thing on freecycle we had 2 free greenhouses this year
also try fridayads
the small plasic ones are stronger
Ill proberbly try and get a new small one when there on offer dont tell MrsD