150 buck isnt a bad deal then.
Ive always done my own cars and in the spring I use some Dawn dishwashing detergent to remove the old wax,thats the only time you want to use it!Since it will remove the wax,always use a soap made for cars.I like to use Eagle One Wet car wash soap which won't strip wax like household cleaners and detergents.
Next is to use a Clay Bar to remove all of the contamination of off the paint. After the claying is complete,its time to top off with your favorite wax or polymer product.I prefere polymer over wax because it holds up longer.The problem with carnauba/wax is a 180 degree F. melting point. This may seem high but a black or red car parked in the sun can have a sustained 200 degree F. paint temperature. The wax is literally melting off the car! As a rule of thumb, 50% of a carnauba wax coating is gone after 30 days, 75% is gone after 60 days and after 90 days it’s time to re-wax the surface.
Ive been using a polymer called BlackFire and have been very happy with the results for the past 4 years.I also apply it with a polishing buffer.
CLICK HERE FOR BLACKFIRE
Also here is a good site to buy some very good products from.
www.properautocare.com
~Larry~