Yes I'm not sure how people are achieving £6k in Jet2. Unless they're on the old increments contract. I never once got close to £6k in my time there (admittedly the pay has gone up since I left). As a 73 skipper doing 650 hours a year, my pay ranged from £4.5k in winter to £5.4k in summer after deducting £300 for the pension.
Afaik the hourly rate is £2.10 at Jet2. My variable pay was about £600 - £800 per month.