Is a new car worth my Saturday?

I refuse to negotiate like that, myself. I just get their best price and decide if it's worth it. The second the back and forth starts, I'm finished. My last car purchase in September took all of an hour at the dealership, and that was a delay because the guy who does the paperwork didn't notice that I had stepped into the service area to inquire about another vehicle I own and needed to bring for a recall.