That's for the standard one by the way, unless I am mistaken you need the Premium edition for all of the DLC, hopefully some new characters are on the way. This is a really really good price for a disc version with the Goro DLC. One thing i would point out is that you can pickup the Premium Edition Digital format from the Canadian store for around £27/28 but is a little fiddly to achieve. The price is $49.49CAD PLUS taxes so $51.95CAD if you opt for the state of Alberta which charges 5% taxes. Because of this you would need to purchase $55CAD (So $25 +$10 + $10 + $10 Gift cards) from the Microsoft Canada Store which equates to roughly £27/28 depending on how you pay.

There are loads of guides out there already on how to do it.