There are some similar deals around on SD, one Dell EPP (expired) and one in Sam's club.
I combined the $25 Costco online coupon with the Chase Freedom 5% category hoping for a final price around $272.
with tax and free shipping.
Samsung description [samsung.com]
Costco TV [costco.com]
SD thread for Costco $25 online coupon (can be found in store) Here
Chase freedom has Costco as a 5% discount category for current 3 months (you need to activate)