I'm not sure if this will work for everyone in the U.S. (it might depend on your region), but Advance Auto Parts is selling an exact match of our OEM battery (same specs - 70Ah | 760 CCA | AGM) for
$126.99 before core charge and sales tax.
The battery is $176.99 and there's a 30% discount (max $50) if you use the code
HXE3BX when you check out. This code is for online purchases shipped to your home, but the code still worked when I selected in-store pickup.
If that code doesn't work, Advance usually has a discount code you can use. Try PS20 for 20% off, for example.
The battery in the online description is grey, but when I picked it up it was actually black. Here's a
link to the item. The full URL in case you need it is shop.advanceautoparts.com/p/autocraft-platinum-agm-battery-group-size-h6-760-cca-h6-agm/10210829-P?navigationPath=L1*14920%7CL2*15000%7CL3*15597
Here's a picture of the battery; I also noticed it was made in Germany: