Firefighter Tristana price

As you can see in the link skins that cost 1820 RP are suppose to be legendary with new model, new texture, new splash image, new animations, new visuals, new voice over and sounds. Firefighter Tristana used to be in the group as others even if she didn't have new voice and many differences from the base skin. Not so long ago Riot moved this skin out of list of legendary skins but didn't change the price and it kind of doesn't make any sense right now. As an owner of this skin I feel like there either must be a new update for this skin or the price has to be changed as well. (and I would appreciate the refund of the price difference)