I don't think an annual income of $150k for a couple is high. I would think it is middle income!
Well we must be low income then with a combined one of $85K. No freaking wonder we struggle. My DH works fulltime and earns just over 50k (works for state Govt funnily enough) and I work 3 days and earn just over 30k (in an industry I've been in for 14 years and have qualifications in) We work damn hard and sometimes I wonder what the heck for. If I didn't work we'd be stuffed and if they took our childare tax benefit away we'd be stuffed. It's a catch 22 for us.