This service, ~ A Service, which you pay for. IF your looking for something that's free, your not going to find it here. Actual employees are filling in the captchas for you. These employees get a wage! That wage is paid by charging a price per solved captcha.
The service itself is FANTASTIC! Works perfect. So you must decide if the price is worth it to you! If your a spammer, then the cost probably is not worth it to you. If your blind, nearly blind (like my Aunt who I installed this for) or just annoyed with captchas on pages and are willing to wait for someone else to fill it in for you.. then it's worth it!