IS Boxer is $10 for a quarter of a year, or $36 per year.
You get 15 or 30 days extra if you mention a referral.

But it is a subscription.

Compared to Keyclone...
$20 per computer (as many accounts per computer as your system can handle) and each license is good forever.

Mouse Broadcasting is much more accurate and quick.
Can 'send next click' for very easy AoE targeting like Hurricane/Blizzard/MassDispel.
Can configure repeater regions for very easy/strong healing.
FTL is automatic.
Keymaps are very flexible/powerful macros or other actions... options like active window only, other windows without active window, specific toons as the target, all of (preconfigured groups) etc.
Virtual files get you the benefit of symlinks, without any hassles on patch day.
Very strong support from Lax, and IRC for support too with people in it 24/day.

Sorry cannot help you more with KC.
It is very good for I click this key and they all get that key.
But not so good for the mouse stuff.
FTL works, but isn't easy to set up.