Purchased from B&M today.
Per previous thread, Costco still features the "old" version of T-Mobile Plans. This means that for those nefarious slickdealers, you can get the phone for $149, then soon after pay $200 early termination fee, giving you the S4 out of contract for $349 + Taxes
All Costco phones come with an accessory kit which includes car charger, sceen protector, and some useless stuff as well.
They also have a coupon for $30 off "unlimited" data plan.
For those worried about 16GB, this phone has an expandable memory slot, so you can cheaply add another 64GB if needed.
If you dont already have a Costco membership, they offer refunds for those who purchase membership and decide to cancel it.