McDonald's is auctioning off a 'Golden Shamrock Shake' cup said to be worth $90,000

4:34pm PST - February 25th, 2020    st. patrick's day - CNN

If you're not trying to get pinched this St. Patrick's Day, one of McDonald's limited-time green Shamrock Shakes might come in handy. And now, you can even get an 18-karat gold cup to go with it.