I scrapped cars for nearly 3 years.. with the prices the way they are right now (i.e. .02/lb) on the majority of what the car is.. I bailed on doing them at all. Some guys are sticking with it.. but that is all according to your business plan (you do have a business plan yes?)
So from someone who just "hung it up" I'd say it isn't worth the time vs effort. But that is a decision YOU have to make for yourself!
Bookmarks