I was planning on going the Interstate blem route too but my local distributor charges around $75 for a group 31 blem with only a 30 day warranty.I honestly haven't had luck with anything from Batteries plus. I've used them on three occasions for UPS batteries and none of them lasted more than 2 years, I buy the same 7Ah off ebay for half the price and they're going on month 35 without failing yet. For a car battery getting an Interstate blem for sub $40 steers me away from pretty much any other place to source a battery.