IIRC, with 2Captcha, you could do captchas for them and get credits to use later for your own captchas. This way you could, for example, do 24 captchas in a row (which it doesn't take that long) and use the credits to make a bot that claims an hourly captcha faucet for a day. Instead of visiting the faucet every hour, you did some little work at the beginning of the day/week/month, and he would be 24 hours claiming faucets for you.

Other than that, I doubt it was ever worth to buy "captchas-completers" to claim faucets (maybe if you consider holding all the coins while the price is low and selling when it rises).