Exactly.. the original purchase is for a single download of that font, which may not be copied.
You can sell it or transfer it to someone else, but only as long as you are losing it in the process and there remains only that one copy.
I'm not sure on this. I may be wrong, but I thought it was Ok to copy it, just for use by the buyer in more than one of their own sabers.
I guess when buying a font, we're paying for a copy of the files and for a single user licence for the font, which we're able to put in mutiple sabers that we own?
If it were software, I assume it'd be like the scenario where the licence allows you to copy/install it on more than one machine that you own, for your own use (rather than just on one machine for your own use, which I took from what you're describing?).
Either way, the 'licence' is transferred if you sell a saber with that font and you're no longer entitled to use it without purchasing a replacement 'licence' for yourself (i.e. buying the font again).
It'd be helpful to have clarification on this. Thanks.