SG has cases of PRC in stock for much more agreeable prices, as does Academy.Also took the liberty to check into ammo available for the 300 PRC. And I just clicked the first site that was up was midway and they had six or seven different offerings and all of them were out of stock except the match ammo that was 65 bucks a box. I'm sure there's other places out there that have ammo but it doesn't look good from my initial search.
You won’t find the same for WM.