One downside of futurefonts.xyz is that each font comes with a different license. Bit of a headache to keep track of the individual Terms & Conditions as a typical user who might want to use a couple of fonts in a project. Really wish that fonts were sold under more standardized commercial licenses.
At least with many open & free fonts, the SIL Open Font License is practically the standard.
https://en.wikipedia.org/wiki/SIL_Open_Font_License