That's a good point, I would have said about this.
These kinds of albums have almost always two princes, event price and online shop price(consignment sale). When I checked other dojin albums, they usually put event price without mentioning another price. So, I changed 1200 to the event price 1000 referring to the official page(
http://hatukiyura.sakura.ne.jp/walpurgis/).
Anyway it shows event price 1000 / online price is 1500 (at that time), why 1575?? should add tax on the official page's prices??
Official pages usually never mention whether the two prices are including tax or not. They are usually the prices without tax??
I'm slightly confused how to fix price for my posts.