Reus to Stansted and back is 1500 miles.  At 150 euros ticket price (high?) you're flying 10 miles for a euro. Cheaper? at 100 euros it's 15 miles.  30 euros it's 50 miles.   Do not whinge.  If you're of a certain age you'll remember Super APEX and ABC (Advanced Booking Charter.. eg Laker's transAtlantics; these state controlled fares were to ensure the IATA scheduled carriers' (BA, Iberia etc) revenues were not eroded by free market activity.  Restrictive practice was outlawed years ago which has allowed the likes of the Ryan family, Sterios, et al to flourish.  For goodness sake stop bl**dy moaning and take advantage of these ridiculously low fares and BE HAPPY.  Obey their silly rules and benefit.