On FANBOX, you can make multiple support plans (price tiers), ranging from 100 JPY to 10,000 JPY per month. The downside of having total freedom of choice is that many people start worrying about how much they should charge.
Based on data from all of FANBOX, the average pledge amount a creator receives from a supporter is about 500 JPY. Therefore, if you're wondering what price to set your plan at, we recommend starting with a 500 JPY plan.
Creators who provide multiple plans usually receive more total income from their supporters. Try starting with a 500 JPY plan, then adding more expensive plans once you get used to working with FANBOX.