This is available on Amazon UK for £6.03 with free delivery if you have prime. I got one a couple of months back for my X100. It is very good for the money.
In fact I was so impressed by the build quality that I managed to score an almost new larger version on eBay UK for £3.50 with free delivery, when I received it I couldn't see any use marks on it at all. The larger one is big enough for my X-E1 with an extra lens.