We're always curious to see different cash valuations of miles, so here's an interesting data point.

AA Shopping is running a contest where you get extra entries for doing stuff they'd like, and first prize is $2500 cash and 100K RDMs. The fine print says that the value of the first prize is $4910. Meaning that the value of 100K RDMs is $2410. So they "value" the miles at 2.41 cents per mile.

A curious contrast to the imputed interest for the Bask Bank miles account, which values them to you at 0.42 cents per mile. Admittedly, they have an incentive to make the exchange rate favorable because it reduces the taxes due from the account holders, and therefore makes the account more attractive.