on the other hand if you're "NOT" taking this into the water the reviews aren't bad. You have a water proof device that has an opening for SD cards. My guess is these people either aren't closing the doors correctly, their kids are doing it and not getting a seal or any number of other reasons. The camera could be good, just the fact that the closing mechanism isn't designed for idiots and fool-proof. Some guys said they're tech savy but just because your tech savy doesn't mean you can perfectly seal a camera who's sealing mechanism isn't a surefire every time. I'd think that if you're not going to be throwing this in the water you can get away with the $20 cost.
Buy clear waterproof camera pouch from ebay or amazon. It works well.
I have a several waterproof devices but never use without those pouch when I go to water sports. It sounds silly use waterproof devices in waterproof pouch but none of devices are 100% waterproof and accident can happen.