If this is just for some basic car camping or for setting up in the backyard for the kids then these will do. BUT
I also agree. If this is for serious camping use, don't go cheap. It'll ruin your trip when you and all of your gear is soaking wet. A few things to never go cheap on is your tent, your boots and socks, and your backpack or frame pack. Those things can make or break a backpacking trip. Good luck!
-Jake