Microsoft itself has cut the price of a year of Xbox Live to $39.99 via the Microsoft Store. There are often sales on Xbox Live subscriptions via other sources, such as Amazon, but this is the first time I’ve seen Microsoft itself selling a subscription for a discounted price (it certainly may have happened before).
There’s no indication of how long the $20 discount will last, so snatch up your code while you can!
I’ve been a monthly subscriber for way too long, and have essentially been throwing away money. I picked up a code and along with my free month from the Master Chief Collection I’m now ‘golden’ until April 2016.