I also find entering numbers on a numpad to be much easier and feel more natural, probably because of growing up with calculators. They definitely have a place on modern keyboards.
10-keyless keyboards are (kinda unfortunately IMO) popular with the custom keyboard crowd. I'm actually a little surprised that it's not available in an even smaller form-factor.
Really, this would have been an instant buy from me if it had a numpad. Kinda doesn't make sense that a retro themed keyboard wouldn't have it! I love everything about the design otherwise.
If they want to make a retro-styled keyboard they should make one without the "Windows" and "Menu" keys so that you can play Commander Keen and Duke Nukum the way they were meant to be played.
Pretty cool looking, but I'd need to know how sturdy it felt and what the keys were like before buying it. As a novelty alone I don't think it is worth it, but if it is also a good keyboard then I might even get one.