First of all what you are offering , I'm sure will not work. Second, people(like me) can buy a bot with the automated script for around 10-20 bucks at thebot.net(I know because I recently ordered one for a faucet and it works). Thirdly, there are extensions like this:
https://chrome.google.com/webstore/detail/rumola-bypass-captcha/bjjgbdlbgjeoankjijbmheneoekbghcg?hl=en which have a lower pay per captcha system.
P.S: Fourthly, if your captcha solving bot(which I don't believe you even have) doesn't depend on human input like 9kw.eu , it is soon going to be either patched up, or your IP will be blocked because your bot will be making lots of captcha mistakes.