Quality of the paper stock for the cards is barely adequate but is OK. Over a two year period of purchases I find about 25% of the cards continute to have manufacturing marks/creases across the middle of the cards.
I only needed 50-100 cards but had to purchase a large package of 500 because that was the only way they were available. I don't have a need for so many and I don't know where I'm going to store them in my small home office. I wish they'd been available in a package of 100. The cards themselves are fine - simple blank 4 x 6 index cards.