There you go. you sold 3 days for 3000 dhms, correct? so normally about 21000 dhms which is around 3200 sterling take home. The same as a UK F/O after tax give or take. no pension, nominal health care etc etc. You also have to pay high rent for a property you will never own, not that you're in it much anyway. If you continue to sell 3 days leave a month you'll be left with 12 days leave a year. You need to be careful here because if you don't take leave in a block of 14 days or more you lose 2 travel days per block which is 4 in a year. it's in the small print somewhere. No one would work for that kind of leave benefit.
Anyway, stick to the facts when you go on about your pay, otherwise people may get the wrong idea, and don't show off what is in effect a fairly average deal.