[quote name='UnrealZero']Very weird because it says
Free Shipping on Everything at BestBuy.com
No minimum purchase required. Offer valid with standard shipping through January 2, 2013. Excludes select Marketplace items and items displaying "In Store Only" message.[/QUOTE]
Yeah, I thought it was really weird as well. Didn't notice an "In Store Only" message or anything on the page, but apparently the free shipping has its own offer in the checkout (you can see this in your cart with an eligible item).
Hope customer support can refund the shipping, but I guess it's not a big deal.