I booked a trip on Priceline on August and required to cancel this month. They told me I can't cancel it due to non-refundable of the ticket. I didn't find out any "non-refundable" on my itinerary. I called them many times by oversea phone and spent a lot of time and money to find out the solution for cancel. BUT they always repeated the same words and re-sent the useless same email to me. I don't use priceline any more...