And that's why these shops can charge what they do. It's a huge amount of work between prep and applying it. My shop said they applied the rear twice (so wasted product) because they weren't happy with it the first time and there was a stretch mark. The apologized saying the second time was a little better but because of the curves there was still a stretch mark and if I wasn't happy I could bring it back and have it done a 3rd time for free and they would cut it into two parts and hide the cut right along the edge of the rear deck.... I couldn't notice a single mark on the back and I looked REALLY hard since they tipped me off... Again, you pay for what you get. I rather have a shop that's super hard on themselves to send out the best product around vs one that's undercutting everyone else but you see the edge peeling up etc.
Also, be sure to ask if the shop will at least do a one step (but I would push for two step) paint correction before applying any clear product. A lot will claim that the adhesive of the PPF will fill in any small swirl marks and you won't see them, but if you're spending that kind of money, they should clean and correct the surface to be perfect before applying the film. My guys did do a single step paint correction and while it looks great, it's not supercar mirror finish. I think if I had it done again I would ask about paying extra for that amazing deep polish to get the mirror concours look before applying the film... but I'm thinking of going stealth for my Performance Red. (Still going to ask if they'll do a one step paint correction though, the more flake that catches the light and shows through the better that stealth will look!)