I can see the price on a case of ammo being $20-$25 dollars cheaper on the either coast simply due to the shipping.
We have a big box store here (Sportsmens Warehouse) that has 7.62X39 on constant back order. Whenever any cases of WOLF are delivered they get sold out the same day. They do pretty brisk sales of US made (Winchester) 7.62X39 at around $8-$9 a box of 20. I don't know the price on the WOLF ammo as I am never lucky enough to be there when any is available!
Seems to me if folks are paying the current price then the manufacturers/importers/retailers don't have any reason to sell it for less. Keep in mind that this is ALL new made ammo now, the surplus is gone. The Russians watch pricing here and you can bet they no longer want to sell there ammo "short".