Both the Sunfury and Grotesque armour sets were available through Vic the trader's store, where they had the same price in credits. You first buy the different pieces of the armour, then you buy enough of the upgrade items to improve the appearance; gem of aspiration for Sunfury, and soul gem for Grotesque.
When Vic's store got converted into the DXP token store, everything between the two sets still costs the same, except for some reason the soul gem costs 100 tokens and the gem of aspiration costs 1000 tokens. This might not seem like much, but it takes 70 gems to upgrade the armour appearance.
That means 7,000 tokens to upgrade the Grotesque armour, which seems reasonable, but 70,000 tokens to upgrade the Sunfury armour, which does not.
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