Truck battery died. It being below zero for over a week probably didn't help. So first place I think of is Advance Auto. They have a battery:
Group 65, 650 CCA for $131.99. Ok, sounds good, a bit expensive.. I don't remember paying well over $100 for a car battery.
So I look at the NAPA web site. Usually I only use NAPA for old car parts since they have a much larger inventory. Imagine my surprise:
Group 65, 850 CCA for $94.
25% more cranking power for 28% less money.
On top of that it was on my way while I was out doing errands.
Gotta remember to shop around.