I don't have real-time pricing. Boxing Day (December 26) deals vary yearly by retailer, region, and stock. Here's how to find the best price yourself.
PS3 production ended 2017. "Boxing Day deals" on new units are mostly old stock clearance. Used/refurbished market is where the action is. A Super Slim 500GB + 2-3 games for $120-150 is a solid target.