Just picked up an Optima YellowTop D34/78 for $132 (plus core, tax, etc) from Pep Boys. Shipping was free.
What you have to do:
You have to order it online.
You have to have it shipped to your house.
You have to enter coupon code POLAR20.
What you get:
20% off your entire order.
Free shipping (orders over $125).
I was wanting to do the In-Store Pick Up, but that eliminated the deal. It also bumped the base price up by $60
About the best deal I've come across in a while. And while I have not verified, I'm pretty sure Pep Boys is an authorized reseller of Optima batteries, meaning you're covered for warrantee issues.
I don't know how long this is going to last -- I would guess for a week or until the end of the year. If you're in the market for an Optima YellowTop, NOW is the time to do it!