If you have a vehicle you want to keep, the Sam's Club East Penn Duracells seem to be the best deal at $100-105, 3 year replacement warranty. If you're selling it, the $49 WM Value Power is cheapest-but with only 1 year warranty & Exide made, better be sure you unload it. I tried to get my local East Penn stocking AP store (Smyth Automotive) to price match Sam's, they about laughed me out of the building, & theirs only had a 2 year warranty!