I wouldn't buy anything other than a candy bar from Best Buy and there are better places to buy a candy bar.
There are a disproportionate number of complaints on this site involving Macs purchased from Best Buy for reasons that are not entirely clear.
Shop the Apple Online Store and the Refurbished & Clearance store. Compare what Best Buy is peddling to Apple's prices. Make sure Best Buy isn't selling you an open box, returned, or discontinued item, and then choose wisely.