I've never scrutinized my intl receipt carefully. I have an upcoming itn (discussed in another thread) which has been changed. I looked at my receipt: base fare $900, YR surcharge: $1300, slight less than 150% of base fare.
What is YR--why so high?
[Most of my intl trips are part of DL vacation (air + hotel) and the package is often cheaper than the airfare alone.]