This is a good quality and easy to put up tubular frame. The roll of chicken mesh is your standard quality so a fox can chew through it, you would need the weld mesh option. Beware though, they are much bigger than you think once in situ, remember to check height as well as floor space for one and whether you can easily move the coop within it as once the door is on it, you won't be able to take the coop out without lifting it right off the ground.
I bought a 3m sq one on ebay for £210 from garden life, but sadly once in the garden the trees hung too low, so it had to go to a friend.. Not the prettiest, but functional.