They are out there but mostly all in private collections of serious collectors. Once and awhile you see them at auction or for sale but you will need some deep pockets. Your best bet is to save up and buy one at a US auction site or retailer and import it via Questar.
Another idea is getting a matching 1941 Port contract K98. These are wartime built K98's built for a Portugese contract by Mauser Oberndorf that are finished very well and you see them with more regularily and substantially cheaper up here in Canuckistan. No difference from a German designated K98 besides a few Port markings on the reciever and stock. I have/had several and they are second to no other K98.
In the meantime, do lots of research, plenty of humped 'matching' examples out there that used to be bolt mismatched rifles so you don't want to get burned. Good luck!