Indie Gala Random Currency?

idk. maybe they are trying to make it more sensitive to region pricing and your ip is confusing to their setup?
i see in the titles both the USD & EU pricing, but the actual price above the buy buttons are all USD still for me. (In the U.S. though, so it makes sense)

Usually I only see stuff in my local currency but it does currently appear to be a mix. Either it is a glitch or it will all be sorted out when the only currency is TrumpBux TM

As far as I know, the bundles are always priced in US$, while the store is priced in your local currency, according to the IP from where you're connecting.
But for the Dark Souls 3 bundle there might be a glitch, or even a setup error, as Bandai Namco games just got added to the store.