UPDATE: My HDR Sky shop is now open, please buy my products there instead, thanks!
The first HDRi skydome is available on 3docean. It's a clear blue sky with just a few clouds. I'm hoping to be able to offer packs at a discounted price as well, but that's dependent on 3docean, so for now it's just going to be individually. Feel free to let me know what type of skies you would like to see next, the image below is just a selection from many!