That's not a bad price at all. Do you think you will be updating your script in the future? Shortlink integration is a new trend now. I think if you had that included you would get some sales. (I don't agree with this part, but) If you also had Coinhive / Cloudcoins integration, I think you would also get more sales. Faucet owners like to monetize their traffic in every way possible. Good luck my friend!