Prices have spiked a bit, in my opinion, since the 90 model years are eligible to be brought over legally as they are 25+ years old now. I think you would just have to check with your state Secretary of State in order to find out what the regulations are and what the titling requirements are.
I looked into it, but can't justify the cost + towing + titling + insurance when I could just buy a WRX wagon, and be ALMOST as happy, but have access to more replacement parts a lot easier. Plus the WRX's are a bit newer too.
Anyone else know anything else about it?