https://www.siliconvalley.com/2023/05/04/travel-troubleshooter-the-cost-of-my-airline-ticket-doubled-and-i-cant-get-a-refund/

DEAR TRAVEL TROUBLESHOOTER: I booked four airline tickets from GoToGate for AirAsia flights from Singapore to Kuala Lumpur, Malaysia. The site displayed a price of $400. After I filled in my details, there was a lag in the website, and a new price of $1,002 popped up through another window in my mobile browser.

I did not want to make this booking anymore, but it wasn’t immediately clear how to cancel. GoToGate charged my credit card $1,002.I checked the AirAsia site, and the same ticket costs $500. That means GoToGate is marking up the tickets by 100%!