Each account is 15/mo, or 180/yr.
With two accounts, that's 360/yr.
Or with my five accounts, that's 900/yr.

36/year for the boxing software, is a small amount comparatively.

Still, if you want one-time purchase software, your best bet will be either KC + HKN or straight HKN.
HKN has a lot of the mouse stuff, that KC is lacking.