Catpiano

D I Y .. lots of work ga ...  

Depends how big the car la..  most shops, charge the same, or just very small extra fee for big cars .. ( Not talking huge SUV or Van )

If you have a small car, such as Lotus Elise/Boxster ..  then D I Y ..  quick and easy,
If you have a bigger car, such as 7 series, A8, S class or Lincoln ... take to detail store la..