Earlier tonight I was doing missions on my xeno to raise rep. I fly an arrow fighter, with two black widows, nuclear mines, and a mosquito disruptor (primarily because it does more hull damage than the other disruptors, and I use it as a missile launcher when doing npc missions agaisnt the low level junkers/bounty hunters).
The highest paying mission I got on ouray was 17,500 credits for taking out... around 18 junker CSV's. They werent hard to kill... but it took a good 15-20 minutes to finish the mission.
When I got back to Ouray, I had made approximately 18-19k from recovered weapons, cargo, and the mission payout itself. I turned around and payed over 60k in ammunition afterwards... more than three times what I got in payment.