The thing that pissed me off about registering my car after buying out of state is that they used "Blue Book Value" which was about 10K higher than what I paid for the car. Didn't matter what I actually paid, they based the tax evaluation on what they had.
Government is going to screw you no matter where you are. Bend over and enjoy!
2008 Infiniti G37s
2014 BMW X6
2001 Purple Lotus Esprit