I did paint correction, decontamination, all myself - pretty cost effective DIY. And the work is therapeutic. I followed the infamous "Pan The Organizer" YouTube video on how to do it. Here are the steps; it sounds like a lot but it really isn't:
As you can see in the photo of my 2010 Tango Mango Ram with 90k miles, she look great!
DETAILING STEPS
Clean & decontaminate
Tar/bug remove
Wash w/Chemical Guys Clean Slate Stripping Wash
IronX-Rince
Clay bar w/lubricant
Rinse
Air Dry w/compressor or lint free waffle towel
Paint correction using buffer
Using cutting Compound
Using Polish (Finishing polish)
Apply ceramic coating
Wipe with lint free waffle towel and Isopropyl Alcohol to clean off any polish oils
Apply Ceramic Coating (I used Armor Shield IX by AvalonKing (MUST CURE FOR 12 HOURS)
Look for rainbow effect within 3-5 minutes, then it is time to wipe down lightly (leveling)
Wait 1 hour and apply 2nd coat but not necessary
Apply coating to all exterior parts except tires
48 hours no rain / no wash for 7 days
Throw away micro towel used for applying coating
Optional Apply Gliss V2
Use wax free car wash
Use coating enhancers like Carpro Reload