While I know there are many, many folks on this forum who have much more experience than I re: window tinting, my first suggestion is to visit the Deleware Department of Transportation website to see what Deleware state law allows re: window tinting. After that, it comes down to what you want to tint, i.e. sunroof(s), side windows, & rear window(s). I just paid $120 to have my sunroofs tinted. So far, I am satisfied and am planning to have the side/back windows in my Clubman tintied later in May.