if you already know a bit about soldering building one is not hard, although i do not know of any keyboard with a d-pad, split and half keyboards are not that uncommon, Matias has one for example, and there are the split ergo keyboards that look like 2 of your orbweavers with keys instead of the d-pad, and if you look online you can find refurbished orbweavers if you really want that "keyboard" in particular