This turned out to be a pleasant surprise as it actually works very well. I have used it to cook burgers and pancakes so far both of which came out great. It's incredibly easy to use, takes up so little space, and works quickly.
Why only 4 stars? It's not easy to clean. The plates themselves clean quite easily so something like pancakes had basically no cleanup. However when cooking something like a burger that splatters a bit, the sides got quite messy and are difficult to clean. There's a small gap between the plates and the rest of the device that you'll never get food out of. Close this up and I'd give it 5 starts.
Overall: highly recommend for somebody with a small kitchen or like in my case who has an ancient stove that's frustrating to cook on.