I was browsing this website for gifts for my grandmother when I noticed that this coat was in the sale priced at £22.50 but when putting it into the basket it's coming through at £7.50.
You can use free click and collect to avoid postage costs or delivery is £2.99.
I also took advantage of the recent Groupon deal http://www.hotukdeals.com/deals/10-for-a-20-bon-marche-voucher-with-groupon-2087227
which gives you £20 to spend for just £10.
I have just managed to pick up this coat plus 2 jumpers in the sale for a total of £11.50 (with the groupon voucher). Such a great deal, hope it helps someone else!