Tried to book a flight a week ago. One site was showing the price 30% less than other sites. Last step, entered my CC info and clicked "Purchase". "Oops, the flight is no longer available for that price, current price: x (the price other sites were showing). Do you want to buy anyway?". To be fair, the dialog with the "Buy anyway" and "Cancel" buttons weren't using any further dark patterns.
No, I would not like to buy anyway, but to welcome to you to the list od websites I'll never use again, [redacted].com...