Lax also has a bunch of bounties on www.isboxer.com.

If you like the software and feel you can contribute to the community, you can get credit for extra subscription time.

If you compare the feature list, to that of other software, imo it's a no-brainer. As in, $36/year (or 13 months, if you mention someone as a referral), is worth it.

For me, the selling points were:
- Automatic FTL without any input from myself.
- Accurate mouse broadcasting, and ability to enable "send next click".
- Instant window swaps.

I didn't even know of the power of Keymaps.
If I had, they would definitely be the first feature on my list of reasons to move to IS Boxer.

There are a lot of options out there to go with, and several free options.
But imo, nothing else comes close.