I have not, and if it's legitimately just $1 for 1000 captchas, then nah, that's not close to being worth it. You have to consider time for the money. If you're going to be sitting there for hours typing out captcha and all you have to show for it is $1, then you're doing something wrong.
Instead of wasting time on something that pays next to nothing, then use that time you'd be doing this work, to research other online jobs, and search for other work. You're just wasting your time if it's $1 for 1000 captchas, that's honestly crazy to me. How long would it take to do one captcha? Now calculate how long that would do over 1000 times. Yeah, not very appealing to me.
Now if it was for $20 or more, maybe I'd consider it, but for just $1, it's not even worth it.