Sorry to raise an old thread but just in case anyone wants to know the keyboard arrived and the keys work OK.
I found that some keys did not register very well. Spacebar was one. Key felt fine but with normal use the SB would not register all hits. I had to actually take the cover off and touch the switch pins up with solder to fix that one. Then the right shift key wouldn't register all the time! It was hit and miss! I didn't feel like taking the keyboard apart to re-solder anything this time so I removed the cap, please be very careful removing an Alps style cap as I've actually pulled the entire switch out with the caps before

, opened up the switch and took my tweezers and spread the space between the contact leafs. This seemed to resolve this issue.
So in closing...these keyboards are okay for the price. You can tell the quality is on the bottom end of things and you may experience a few keys that has "issues" but if you want a retro iMac type keyboard or you use a Mac and want a cheap, mechanical USB keyboard with built in "Mac" specific keys then I would suggest give one a try and see. I mean if nothing else, you can "learn" on this keyboard about opening switches, soldering, etc. or the one you get may work 100%, either way you are out less than $20.00

Jman