The preview of the store also confirms what I said before:
The fake currency will force you to always have some left over. They show prices of 600, 540, 360, 240. I would bet that you can only buy their fake currency in something like 100, 200, 500, 1000, 5000 etc. This is forcing overpayment.
I just hope they stick to their cosmetics only promise, because we've seen plenty of companies rolling back on this type of promise already.
I will just say this:
The backlash from in-game shop and these currency shenanigans coupled with lack of polish and features that should be at release in Darktide resulted in the game being review bombed down to 22%, only that woke Fatshark devs up, they have adjusted currency pack prices, so if you wanted full set of cosmetics, you could get full set of cosmetics for exact price, no leftover currency, they have also put on hold all their planned monetization and got to providing players features that were missing on accelerated rate as well as other QOL changes, which pulled the game from attricious state comparable to one CoH3 is in right now.
However, something tells me the same review treatment would lead to abandonment of CoH3, DoW3 style, but also WH40k community is one you do not want to fuck with(bEhavior interactive even pretends they didn't made Eternal Crusade, that's how strong backlash about broken promisses and low quality were).
You can fight these things.
But this community won't, too many casuals and not enough vocal, butthurt players who know how to write reviews.