Dell has the Bose QuietComfort 35 for $349.99. If you have the Amex Deal for $100 off $300, you'll score these for $249.99 plus tax. I also received 12% Cashback during a Thanksgiving promo from an online Cashback site plus 5% towards a future Dell purchase as Dell Advantage member.
Free Expedited Shipping for Dell Advantage members or Standard shipping for non-members.
black - http://www.dell.com/en-us/member/shop/bose-quietcomfort-35-wireless-headphones-with-mic-black/apd/a8984626/audio-ii [dell.com]
silver - http://www.dell.com/en-us/member/...5/audio-ii
My effective price is $371 (total with tax) - $100 (Dell) - $42 (12% Cashback) = $229. Plus another $17 to use at Dell at a later date....and 271 Delta Sky miles
Everyone on here that still has the Amex deal can do even better with Slickdeals' $50 rebate for $300+ purchases at Dell.