We would like to offer historical API to paying customers. We have a lot of data.

But we want to retain customers. We do not want them to leave after dumping our data. At keep keep paying us :-)

So we came to the conclusion: you get data from when you start to pay us, and we add a little extra (last 2 months) but no more. It is in the FAQ.

Historical API, we must think more about that.