I think the head gasket issue is slightly overblown. Yes, some of them do go, but those that haven't had them replaced aren't necessarily driving around ticking time bombs either. I would look for a fairly stock truck with lots of maintenance records from a soccer mom type owner. These are rare, and getting rarer, but if you want a really nice 80 series you're going to have to be patient. And as you noticed, pricing is all over the place. Be prepared to pull the trigger quickly on a primo unit. It will be gone if you hesitate.