I originally posted a wall of text in Sengoku official discord's suggestions channel noting the differences between Nutaku's overpriced gacha and DMM's more free-player friendly gacha. A lot of people read and agreed that changes needed to be made.
But nearing launch, they've suddenly blocked the Suggestion's channel so no public user can view it without permission. Basically censoring all the controversy in the beta. Classy.
Good thing I screencapped it. I'm gonna post it here and let you guys see for yourself just how much Nutaku Sengoku's business practice is highway robbery. And judging by their unapologetic reaction to the controversy, they don't seem willing to make any drastic changes soon.
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tl;dr Every gacha machine on Nutaku Sengoku that guarantees a 5* units is paid magatama except the normal one which only has a 2.61% for a 5* unit.
Meanwhile on DMM, every gacha machine is usable with Free Magatama and guarantees a 5* unit for every 10 draw.