500k? i'm not usre it's even possible with a rotator, mayeb only if you have a bot or you pay someone to solve the captcha like 2captcha, that have a very low cost for solving captcha

in the past was possible to do 0.01 a day but the value was way lower, the faucets were paying more, but only with a bot not manually

maybe you are talking about that coin that allow you to "mine" with solving captcha, was called raidblock or something? that was very profitable not long time ago