with some twine and a ripped up tarp you could make your own corner pockets. back in my day we worked for four months to make 51 dollars. some twine and a small piece of tarp will do just fine.
How many do you get in a pack, do you get 1 or 2 or all 4. Also how good is this product vs all of the other corner pockets, this one looks a little more heavy dudy.