It's way cheaper than buying it in a shop - the stuff is in the original packaging, brand new, unopened - totally brand new and high quality. These are original Made in Japan springs mate, I don't mind to way even if it will take me years to sell it, as I know for a fact it will only increase in price every year, simply because most of the products are discontinued now and it's harder and harder to find brand new items.
P.S. As of the protection kit as far as I know it's exactly the same front and rear - both springs and shocks are the same height so I don't see why make it any different...