[arzzen]

hi @aaronedam, thanks for your question,

- default api response is json format, this format is easy to parse then xml (eg directly usage in js/nodejs app..) - server cost is not too hight , api response is only static json data (data are sync. on midnight), so price is only for bandwige

- i plan added crypto and comodities (like gold,silver etc)

[dang]

Please reply directly to the question rather than posting a top-level comment. (I've moved this one.)