I recently got a 2 hole hub and rim for $260 and a front K0 wheel, rotor speedo drive, axle and hub for $110. I consider both a smoking deal. Found by persistence on ebay.
For those that don't know, the 2 hole rear hub (inside vent holes between the brake drum and cush drive) and rolled edge rim came on the early K0 CB750's. The front wheel is also different with a different speedometer drive, wider hub and rotor with no taper on the aluminum flange.