Century International Arms (CIA) has K98 Mauser actions right now, either Belgium manufacture or German manufacture... comes complete with bottom metal, trigger unit, bolt(complete), blued, listed price is:
Belgium- p/n AC1011-G, condition good....$189.97
German- p/n AC014-G, condition good....$199.97
This is from their latest catalog, I did not call them, so you might want to check and see what the particulars are on these actions, be sure to inquire about the bolt and ALL its parts. The bolts should me matched to the receiver, if not...leave it!
FFL Required
CAI 1-800-527-1252