check around at local battery stores, I get Deka 9A31s all day for $140 out the door, I just checked Carquest and they sell the 31s CHEAPER than the 9A78DT under their NGT Extreme line. Orieleys sells a relabled deka under their name also from what I hear, none near me though, maybe you though. Probably wouldnt hurt to see how much the Sears Platinum (odyssey) sell for near you also. In other words make some phone calls. I got my 9A31 from rebirth auto when they had them still in stock.