I would easily pay 0.0005 per solve if it meant I don't have to deal with a captcha again when browsing.
Wasn't something I mentioned earlier but using the reCAPTCHA audio is also another solution for gcap. I haven't ever used it personally but always seemed like a cool idea.
It’s also very satisfying to know I’m not an unpaid mechanical Turk for google anymore and that it’s a machine solving another machine’s challenge.