Follow-up for CaribMon71:
I never got a quote from LA Tint and decided not to go with them since they are only open on weekdays.
Today I went over to California Tint in the Tysons Corner area (1524 Springhill Rd., McLean, VA) and was quoted $380 for a ceramic film, 40% light transmission all around. They were out of the tint so they're ordering it and I'm having it installed next week.
The legal limit in Virginia is 50% for the front sides, and 35% for the rear sides / back. So 40% is technically not legal for the front sides but it may be subtle enough as to not draw any attention, while keeping the tint uniform. I hate that VA makes you have less tint for the front sides.