I can't help noticing the irony that here faucet owners are saying that reCaptcha is not that great against bots, and on the other hand users say that you get
"Multiple correct solutions required" after solving too many reCaptchas. Good job, reCaptcha!
I visited the FunCaptcha site, and I didn't see anything about paying to use their service, it's just that they've closed off registrations. Did I miss something? I still see a few faucets using FunCaptcha.
See this thread or their
recently updated FAQ - "Free (trial)" sounds like they'd be expecting you to pay up after using it for some time.