That system isn't particularly good with kitchen knives and would be useless for razors. And since you can get it new for $45, it's not even a good deal.

Chromium oxide on balsa is good for maintaining an edge, and inexpensive. It's a decent stop-gap while you get your bearings and come to grips with the wealth of material in the honing threads. After all, you only need one working razor at a time.