Adorama has the Canon EF 50mm f/1.2L USM for $1299.99. Use coupon code S123456789. Free shipping within the US, and get $26 back in Adorama rewards. This is the cheapest price that we’ve seen in over 6 months, since February 2013. The last time it was cheaper than $1299.99 was in 2008, when it was $1249. This makes it a great deal!
Adorama coupons are entered during the checkout process. There’s a box to enter the coupon right above the box where you input your credit card number.