It was sarcasm, because a student with student loan on him and $100-200 lunches are incompatible concepts.
And a person accustomed to such daily habits and spendings wouldn't react so much to a quite modest inheritance of $5000
wow

thx for explanation and bringing me up to date
Where I'm from, $20k is equal of a decent country house from scratch with all the finishing, except furniture. Not as large as DIKs mansion, but's it's still a whole house, not just a windows for some house...
Now i understand how they tore their asses for about a month and a half that the repairs lasted, because windows replacement wasn't the one thing they had to paid for. And it's clearer, why Rusty decided to sell his car and how much +- he could gain from this.
I had the impression that it was relatively cheap, because the last time their windows was broken, it was as if nothing had happened at all. Now it is also clearer what cash amount could be stored in their safe, how much Pink Rose services and everything else could be worth, because everything revolves around that stash, which Rusty's father offered him to use.
So the stupid jokes of the fraternities on top of each other now began to play with slightly different colors for me.