Your Shop Fix price

So my friend who is new, just started playing and she open "your shop" and her price is fixed from a normal skin. she got an arcade sona skin which is suppose to be 1350 rp but for her the original price is 2140 rp. The discount for the arcade skin is 20% which would also mean that the skin should be discounted by 270 rp and the price is 1080 rp. My other friend opened her shop and she got SG lulu with 60% off, so did my friend that was new also got SG lulu with 60% off. My other friend price for the discounted lulu was 540 rp while my new friend is 892 rp. Riot Fix your shit