I've never spent the income I receive... I honestly have no idea what spending say, 60k/year is actually like, and I consider $5-20 things rare treats that I enjoy ~1x a month(Costco Salmon slices w/ honey mustard at ~$11/lb, Frappucino's, etc.).
So, if I were netting ~100k/year, I know i'd have an absolute blast spending it up to about the 60k/year mark, I have no idea what the next 40k/year buys in extravagance, though I'm pretty sure I could actually get tired of scuba diving around that mark :P