Spent 5 USD for 1 day trial period. Submitted an ordinary image captcha three times (real value: "ynpcvsky") and received three different answers: "vy9ba", "k63p4", "c7glj". Either a random string generator or they have a mess serving results for the incoming requests. Have no idea what's going on since their support keeps silent (also it says "we are online, wait 1 minute"). Hoping for the best, but almost sure this is a scam service.