I realize this is an old thread but I thought someone might like to know Autozone is running a winter sale right now. I just picked up an Odyssey 34/78 PC-1500 for about $60 off. Price was $296 (battery) + $18 (core charge) + $16.18 (CT tax) - $59.20 (discount code "winter20") = $270.97. Shipping was free. Not sure if I'll get the core charge back but that would save an extra $18 making the total price $252.97. The cheapest price could find elsewhere was $295 total. The Odyssey web store wants $304.87.
And no, I don't work for Autozone.
And no, I don't work for Autozone.