Hi! I'm really sorry about this - I didn't intentionally change pricing or try to deceive anyone, it's just that Steam has default regional pricing adjustments that I enabled by default. This means that the $20 USD beta, which was $20 USD when launched into early access, resulted in different regional prices. Itchio doesn't have that feature, AFAIK.
So my plan wasn't to charge beta purchasers more, and if it was, I definitely would have let people know. I guess I just forgot about this regional difference. Hopefully the game is worthwhile, and that the earlier peek & ability to provide formative feedback made up for the extra cost.