Best Buy Deal of the Day: Diablo Battle Chest for MAC/Windows $4.99 by Dana Zeliff on October 16, 20132013-10-16in Uncategorized Disclosure: This post may contain an affiliate link. Have you checked out the Best Buy Deal of the Day? Today you can get Diable Battle Chest for MAC/Windows for $4.99. That’s a 75% savings. Get free shipping with a purchase of $25 or more.