Ask HN: What expenses should one consider as one's income increases?

It's not easy to appreciate where money can be best spent in terms of improving the quality of our lives at a given income level. What expenses or services have you found to be well worth the money spent?

Gleaning from various personal finance experts, we have the following start:

  USD / month  Epic Win   
  10^2         Leatherman
  10^3         Smartphone w/ 'Net access
  10^3.5       A high quality bed, and if you work a desk job, chair
  10^4         Maid, Personal Assistant, Therapy 
  10^4.5       Country / Gentleman's Club as relaxed office     
  10^5         Car w/ Driver, Prop w/ Pilot
  10^6         Jet w/ Crew

What would you add to this list?

Have you seen anything have an unexpectedly large value?