Knife Sharpening - Kitchen Knives £0.50 Quantity: at £0.50 each Add To Basket 0 in your basket View Basket Checkout Price is per inch or per 25mm. For example: You have a kitchen knife with an 8 inch blade, select 8 as the quantity. You have a kitchen knife with a 200mm blade then select 8 as the quantity. Wrap the knives securely paying attention to the tips. If you are in any doubt please contact us for guidance as you need to get this right!