Great little 1978 152 with mid-time factory reman (1100/2000) 4200 TTAF... But the Collins radios are both dead now. Nav went out a while back. Com just quit. Mode C transponder was working, and shows to be working. Owner bought it to learn to fly in, and now is considering upgrading to a 172 or something larger. Is it worth spending the money on a used com/nav before selling it? Even used prices are nuts right now.