Originally Posted by
Nelty
Yes, I bought it for about €390 (btw, I checked in different currencies: same price, so it's not an exchange rate typo). And bought it directly from UA (is that better?).
What I have is an "eTicket Itinerary and Receipt for Confirmation". It does have an eTicket number and a receipt for the amount I paid.
If the receipt is the 390EU then you're covered. You can make them honor it. If it's the higher price you mentioned then you have no proof that UA accepted the lower fare.
Go back to the original site and look at "the fine print". Sometimes these low prices (and this is low but not spectacularly low) are "Each way, based on R/T purchase". So if you bought one way you didn't get it.