Some idea about the tier (Pixiv Fanbox)

You know that I need to use USD in my life and the Fanbox is using JPY to pay. But because of the change of the exchange rate between USD and JPY. I think maybe there is a need to change the tier price.

But I don't want to change it very much, so another way is to add a tier and add some special reward for this tier? Hope you tell me your ideas.

你们知道平时我需要使用美元生活，但是fanbox使用日元支付，由于近期的汇率变动，我可能需要修改价格，但我又不是特别想修改，因为又麻烦又让你们多破费，所以是不是可以考虑增加一个档位，为这个档位增加一些特殊的奖励？