Skin Sale isnt applying properly if you look at it in the shop

i appologize for my bad collage but the pic shows the price is different if you try to buy it from the shop than if you buy it from the champion page. the 28% off sale is not showing if you try to buy it from the store and it will charge you the full price, i got to that BY CLICKING ON THE SALE BUTTON ON THE HOME PAGE OF THE CLIENT btw, so its likely some people who werent paying attention have bought the skins for FULL price rather than the sale. this problem also applies to battle boss blitz.

actually all for sale skins are off in some way, i just clicked on desert trooper garen on the front shop page, it said 260 there but on his champion page it says 520.