Not sure how long this will last or if it works with everything but worth a shot.
If you go onto an item you will see the new price of the product. For instance, I was looking at a product. Yesterday it was £140, today it is now £160.
If you click on the New & Used bit, Amazon UK will show in this list, however the price doesn't include the new rise in prices. So buy it from this list.
I have just bought a product that was £140 but is now £160. I went on the New & Used list and bought it till was and saved myself £20!
This looks like a bit of a hit or miss and depends on the product.