I purchased a couple of these pens and I think they're great!  I'd definitely buy them again.  I just had to be smarter than my cat!  I love the little clips that come with them.  I know they're meant to be used to clip the pens together, but I actually used them to slip other fencing to the pens so the cat wouldn't jump up on the pole.  Your prices are great as well, especially when you figure in the free shipping and no sales tax.