I think free characters are alright, but I don't think it would be bad to add a SMALL set sum of drachmas. Maybe five or ten that someone gets for giving a character. Getting 5 drachmas isn't hard in the least lol. That's like, starting 1 topic and maybe posting a bit. But it would be a set number for everyone. So one character would not be more expensive or whatever than another, unless you find that idea more appealing.
Also, must they be old charries being recycled, or can they be made from scratch for the sole purpose of being given away? Free or not free, I don't care. I just enjoy making characters lmao. Well, except for background story. But personality, physical description and such are fun to make, and I can suck it up for bg story. I wouldn't mind typing up a few characters to give away in my spare time...it would help me practice making more indepth characters, yaaay~! :'D But I'm too attached to give away the ones I currently use. 3
Edit: On the other hand I wouldn't wanna take away Sleepy's business, so... Whatever happens, happens. /twirls