Surface 3 Type Cover alternatives?

Hi all,

Anyone tried using some of the eBay alternatives to the Surface 3 Type Cover? The original type covers are a little expensive at $179.99 per "case", and I decided to check eBay to see how much I could get it for there. To my surprise, using the search terms "surface 3 type cover" yielded a lot of Bluetooth keyboard docks which appear to be quite similar to the original. This would be good, because the main disadvantage I find of the genuine ones is that it does not work when detached as it works with the magnet, so you can't bluetooth it.

Has anyone tried any and can recommend one?