Tinters, audio installers, alarm installers, clear bra, etc... should you tip these guys when all is said and done? The cost is so high to begin with, that i'm not sure if I should or not. Giving them a 20 at the end seems like an insult, so i don't bother. Am I being cheap? if so, how should tipping for this kind of work go?

 

Unless they went way above and beyond the call of duty I would say no way. At least I never have. JMO