The page says it's nylon and spandex. I assume it's about as sturdy as any other nylon fishnet items. It will probably last long enough for you to get your money's worth out of it, but I wouldn't count on it lasting long-term.
I think it looks like it's worth the sale price. As long as you're not rough with it and you take special care to wash it, I think it should last long enough for you to get your money's worth out of it, maybe even more