Zavvi has Sing Region Free 3D Steelbook for $10.99 (free shipping on all steelbooks). An absolute bargain for a great 3D animated movie with limited steelbook case and Dolby Atmos audio – they are even currently charging $13.50 for their non steelbook edition, without free shipping.
NOTE: The Digital HD code is a UK code and as such you will need a VPN to redeem it, unless you can persuade customer service in the US to give you a US code.
https://www.zavvi.com/blu-ray/sin…36061.htm