Bought new in 2016 and parked indoors with less than 20 miles ridden. Completely refirbished with highest grade parts and fluids available. Ridden an additional 30 miles since refirbished to verify repairs. New Michelin Road 6 (world's best) tires (over $400), a new Yuasa battery (best available), fresh synthetic oil & K&N filter, synthetic DOT4 brake fluid, chain lube, and a complete coolant flush & refill. (The bike will still need the specified post-break-in "first service" at 600 miles on the odometer.) The tank has been throughly cleaned out and a new ($500) OEM Honda fuel pump has been installed. She runs and rides perfectly.
Honda still sells the CB300 new today. Get this one with 3 keys, copies of both the owners' manual AND the Factory Service Manual, and the best tires available much cheaper.
Clean Title and Texas Form 130 provided. Cash only.