The price has increased now, but it was £21.99, I added to basket and went to checkout and it showed £21.99 way after you posted your comment. If you don't look at the bottom part of the page for items that are currently out of stock but still orderable them you're going to miss out on a hell of a lot of deals on here.
so for example, size 11, very much available, the cheapest being £39.99, not your "deal"
11, 10, 8, 7, 6 are all available to order if you click 'other sellers' underneath.
i dont call a tiny size 6 lots.
still lots available temporarily out of stock.