You get what you pay for. If what you want are some cheap flats that'll look cute for the three months they'll inevitably last, these are good. Because they are cute, brightly colored and comfy if like me you can't wear shoes with backs without them ripping your ankles to shreds.
BUT they are basically made out of cardboard. They're flimsy, and I don't think I'd wear them in any kind of weather other than dry and on paved surfaces for short periods of time only.
But hey, they're cheap and cute. I'd say, go for it.