Hey all, noticed this one is coming up pretty cheap the same way a bunch of other Amazon UK deals are appearing.
To get the $53.27 price go down to where it says frequently bought together and then can just leave the controller checked and add to cart from there.
Cheapest postage is about $10.
Some things to note is that it has no rumble or nfc, and only works when attached to the console. Has rapid fire function. I think there are a few carrying cases that fit with it attached, but be aware it is quite large.
Suggestion from mrjaytee + reddit in the comments is that this case will fit when attached to the Switch:
Had been waiting for this to come a little cheaper, EB is asking $99!
Edited for clarity on how to add to cart at the price + for suggestion on a carrying case that fits.