Used Mini 14s in Memphis appear to be in really good shape. I bought a 14, then a Mini 30 via "GunBroker.com" (a phone call made the deal).
The used Mini 14s are listed for $450-500, unless in about mint condition.
Have no idea what AKs cost here (I plan to find an SKS instead).
He might look at "GunBroker.com" to size up some of the retail market at a glance.
As for some broader issues, many AKs and SKS (30-40, consisting of Norinco, Yugo, some Russian) are displayed there, but not so many Minis, and the AK price increases might exceed those of the SKS in the short-term due to the anxiety about the future White House' influence on high-capacity magazine restrictions. Some of my info is from local gun store staff.
Reportedly, an SKS can not be sold in/shipped to California. The internal magazine holds 10 rounds.
The 'California Delusion Disease' might spread.
Good luck with the decision.