Looks like this might be a thread that ends as a dud... I made calls to insurance and the property tax office to make sure I wasn't jumping into any surprises. Insurance was no big difference. However, property tax is insane in South Carolina. I knew this, but didn't expect anything like what she quoted. She said it will be right at $1k/year for the truck I'm looking at. It stays there for 3 years, then gradually comes down. But it will still be over $500/year for the first 10 years!
As a matter of principal, I will not pay that much in property taxes for a vehicle.
So, I went out and washed and waxed my trusty steed. She's gonna have to be our workhorse for awhile longer. I'm very disappointed. But this forces us to make due, and that ain't all bad. We'll be screaming in 2nd gear up the Rockies, but we'll have pocket money to do all we care to. :)