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Would be interesting to have a web shop with a repeatable "Solve this captcha for an X% chance of decreasing your price by $0.YY", where it doesn't let you go past a price floor and X and Y decreases as price approaches floor. Discount expires in an hour or few.

Ideally, you'd use a functional captcha, but even without, it seems it would be as useful to society as most current price discrimination techniques.

I'd imagine people would be much more likely to make a purchase if they have already invested 20 minutes solving captchas to save a few bucks.




Some sites have a "spin to get a discount" feature. I would imagine you can just enter new email addresses until you get the max discount.




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