He hablado por chat con Amazon sobre el tema de las cancelaciones, y esta es su respuesta
Hello David,
I'm writing to follow up on our recent chat conversation.
I regret that the pricing error occurred and I'm sorry that you're disappointed with our decision to offer you "Metal Gear Solid HD - Collection" at the correct price.
As part of our Pre-order Price Guarantee, we automatically dropped the price of this item on your order to match the incorrect price.
Normally, we would readjust the price of the item on your order once the error had been corrected.
Due to an error on our part, this did not happen, and your order was instead mistakenly cancelled.
Please note that this game is currently available to pre-order at the price of £28.71. This is the lowest price that we've offered for the item (excluding the error.)
We’ll keep it at this price until Friday January 20, 2012, so that if you choose to reorder, you can be sure that you'll receive the same value as on your original order.
You can reorder the game at the following link:
http://www.amazon.co.uk/gp/product/B0058H1YOGWe do genuinely regret having made this mistake and apologise again for the inconvenience you have experienced.
Thank you for your understanding.
Kind regards
Customer Service Department
Amazon.co.uk
En definitiva, que disculpas por el error, pero el precio no te lo respetamos, y te cancelamos el pedido por la cara. Eso si, me asegurar que ahora el precio es el bueno y lo respetan hasta el dia 20. Pues todo para ellos...