Anywhere between $220 to $380 were the prices i was quoted and thats if i removed my tint myself. Since you have no existing, then be similar. Make sure you go for metallic tint. Also 20% (legal is 35% but virtually useless) is a happy medium for being 'cool' and being able to see out your car windows at night.
Nightshades are designed so that you can. Ive seen darker then those and still seen the light shine through... the issue is how bright. I know a couple of coats is fine and still pretty easy to see through. There is a law that states how far away you have to be to see the light shine, but the reality is his tailights are just as illegal as his ride height...
Hahaha I don't want gloss black because its not my style and my lights are almost see through its just the camera cant see through it haha, plus I really want it supercharged but I also want it looking good :/ arghhh
Gloss black will look better trust me... id get it looking schmick first especially if your an L plater. Plenty of time to save for boost, you dont want to be cutting corners on performance.