Live 2D pricing for SDK was/is also ridiculous, as published on their site.
I did the math a while back and they do by region, platform, etc - multiplied together (adds up quickly) and tiered by revenue.
So if you want all regions and platforms, for a company making about $100k a year revenue (whatever the tier was in Yen), they want about 50% of your revenue.
I brought it up with sales rep and he admitted it didn't sound right and conceded that's what it came out to, and that I can negotiate. Very strange stuff