FYI: Sears Diehard Platinum Marine battery (size 34M) on sale until 2-09-2014 *ONLINE ONLY*
. $46 off. In store pickup only.
Sears calls the discount a "deal heist" and the amount is different based on what you purchase, but I did see that it is available on other batteries in different amounts. There is not a coupon code.
The 34M works with the Genesis dual battery setup.
If you try to order 2, the Sears website may tell you that it is not available at the store you have selected. Change the quantity to 1 and try again. I had to purchase from 2 different stores. Luckily, I have 2 Sears locations within 15 minutes of each other.
Also, if you have a fatwallet.com account you can get an additional 3% off of your purchase.