As someone, living hand to mouth, I appreciate your offer to make a new version for free. That said, if having (maybe a couple hundred?) extra bucks made a tangible impact on your comfort, you should feel free to charge a couple extra bucks per copy, for your time/effort. $10/$25? Any fair person wouldn't call that unfair. Just encouraging you to make whatever decision makes the most sense to you.
best and thanks very much for your excellent work and community-mindedness,
Ben
ps small is fits in a gig-bag and b/w is fine, IMO