As one who's just done this on my car Lex, it's definitely worth it.
Yes it's an investment in time (especially when the car's new and you just want to be driving it rather than watching stuff dry on the paint), however the end result is just stunning and the process itself is not complex at all.
As has been mentioned, have a look through the detailing section (Postman Dan's put up a brilliant how-to on the DIY paint protection) and also have a chat to Joel at ZAS.
Cannot recommend the process enough though
Dan
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