Well, there are several different mausers, including the 98K. FWIW, the 24/ 47 is, IMHO, one of the better bargains out there.
Unless you have a FFL of your own, anything you buy will have to be shipped to a dealer in your state- so get one lined up- and he may have some ideas. There are several wholesalers, but they do not sell to non-FFLs.
Gunbroker.com and auctionarms.com are two of the largest gun auction sites, along with gunsamerica. You can check seller's feedback before bidding. Remember to consider that you will pay shipping costs and FFL fee to you dealer when bidding.