I really hoped someone has actually worked out the math of what is required to get it localised and thus how many they need to sell to get their money back.
When the kickstarter failed, Class of Heroes 2 required atleast 2500 sign ups to preorders to receive a physical release. So assuming the number is around 1000-2000 copies to break even. That's without localization since the localization was already done.
If just translating and inputting all the text I wouldn't see it costing too much, but then there's all the voice acting and I have no idea how much that'd cost.