Charles Stross incorporates economics into a lot of his writing. His two related novels Saturn's Children and Neptune's Brood are all about the economics of a post-human society. The latter of the two has a really interesting take on crypto-currency.

His Merchant Princes series is all about how a dimensional travelers exploit lack of economic knowledge in parallel worlds with less developed economies.

And Halting State and Rule 34, two near future novels, both touch on economics and related themes quite a bit.