Flying for a belgian airline, medium haul jet, First Officer, I get about 2900 euros per month, after tax. It's per diem included.
Other benefits are reduced fare ticket on the company, as well as ZED ticket + ID on interline.
Plus interesting pension fund, loss of licence, insurance for my family in case of death. I should talk about the pretty good atmosphere in the cockpit and with the cabin crew, good meals we receive on board, usually nice hotels for night stop.