CDKeys.com currently has a 12-month Xbox Live Membership for $39.90. If you like them on Facebook you can get an extra 5% off of your order. Good deal as I've been looking since BF and haven't noticed anything.
http://www.cdkeys.com/xbox-live/memberships/12-month-xbox-live-gold-membership-xbox-360?gclid=Cj0KEQiAzb-kBRDe49qh9s75m-wBEiQATOxgwac90eZgO3Wzq4J9YSVCk62DWUn3yzfzDVRnoDK3gyIaAqiw8P8HAQ
http://www.cdkeys.com/xbox-live/memberships/12-month-xbox-live-gold-membership-xbox-360?gclid=Cj0KEQiAzb-kBRDe49qh9s75m-wBEiQATOxgwac90eZgO3Wzq4J9YSVCk62DWUn3yzfzDVRnoDK3gyIaAqiw8P8HAQ