Their own booking system took me to pages of booking premium economy flights. And surprise, surprise, when tickets were issued, only economy is mentioned as flight class. Don't make the same mistake that I did that 1) I purchased through TravelUp, 2) that I trusted their online booking system to be selling in good faith, 3) I didn't take photos of each page whilst I was booking as proof of what was sold to me. They are one of cheapest around but using them comes with a HUGE risk of mis-sold flights. I would absolutely not trust them with another pence of my money. USE AT YOUR OWN PERIL!