Good Cubemaps: Make them? Buy them?

Hello,

I’d like to try to more HDR cubemaps with the HDRI Backdrop that would be around a space station as an artificial sky, or make a 360° backdrop out of a level to not place many decorative actors like planets and asteroids etc. i’m just fiddling around in the moment but am still in need for some more varieties. UE has only 4-5 examples of pretty usual skies.

Before i’d start with something wrong i’d like to know what you would recommend: Creation software? Creation tools? The 30$ product on the marketplace? Or should I buy finished cubemap pictures from somewhere / convert pictures into HDR cubemaps? Do you know any good sources?

Thanks

Naturally there’s: