I agree that Elizabeth had a practical attitude towards money. A sociologist I once read described the dilemma for Elizabeth and her kind as a tightrope walk between practicality and love. I think what Tracy is saying is that Elizabeth did not care *excessively* about wealth.

However, going back to the passage from ch.37 that Tracy quoted in her first post:

[Darcy's] attachment excited gratitude, his general character respect; but she could not approve him; nor could she for a moment repent her refusal, or feel the slightest inclination ever to see him again.

This is the Omniscient Narrator speaking. You know how you can respect someone's basic character without really liking them or feeling comfortable in their company? That's the way Elizabeth feels about Darcy now. We are told that she doesn't feel "the slightest inclination ever to see him again". To me this does NOT sound like a woman who is secretly starting to regret turning down a great catch! I picture it as Elizabeth occasionally regretting the money and position she might have had (as all but the saintliest among us might do ;-), and then remembering exactly what she'd have to live with to get them, and the regret passing...