How the skin price system should work

I think there is a little problem with the pricing of some skins. There should be a system with requirements for prices. I'm talking about gem skins. I think this is a pretty good representation of what it should be.

Recoloured skin - 200 gems I'm fine with this because nobody buys these with gems when you can simply save up a bit of favor and buy it with that.

New model/new texture - 300 gems There are skins at the price of 400 gems while they shouldn't cost this much. I'm talking about olympian anhur, black widow arachne, frost maiden freya, solar sentinel ra, almighty zeus...

New model/new texture + new animations (+ new taunts and jokes) - 400 gems Examples: stargazer anubis, cyberpunk ne zha, digi-mir 9000, ms. Diagnosis neith,

New model/texture + animations + sound effects + new jokes and taunts + updated voice pack - 500 gems Examples: ra-merica, metal carnage fenrir

New model/texture + animations + sounds + new jokes and taunts + updated voice pack + new look and feel to the god - 600 gems Examples: swagni, lil mana, elite agent appolo, G.E.B. 1,

If you have any comments or additions to this, i would love to hear some advice or feedback. I might have made a mistake with a skin so please do correct me if i made a mistake somewhere.