This doesn't seem like a huge savings. I could have sworn I bought my Noppoo Choc Mini for under $80 and that was back in 2012. This layout has some more function keys and a shorter space bar (and larger win/alt keys) than mine, but it's still pretty much the same keyboard.
Also, and I don't know if this has been fixed, but their wierd-NKR USB chip doesn't work with Macs. It does this weird thing were it shows up as multiple-HID devices with the same ID. Windows and Linux mesh them into one keyboard and you get NKR, but on Mac you'll get nothing but double letters. I put it into a USB->PS/2->BlueCube->USB to get it working on my Mac. (This might be fixed in the current release though, so don't take my word for it)
Also, and I don't know if this has been fixed, but their wierd-NKR USB chip doesn't work with Macs. It does this weird thing were it shows up as multiple-HID devices with the same ID. Windows and Linux mesh them into one keyboard and you get NKR, but on Mac you'll get nothing but double letters. I put it into a USB->PS/2->BlueCube->USB to get it working on my Mac. (This might be fixed in the current release though, so don't take my word for it)