Is anyone posting 4k R3D videos? If so, what are your sales numbers?

I've had 50 4 and 5k R3D clips posted for a year and not one sale. Just wondering if it's worth the overhead to do this for my new clips.

I find I'm spending lots of my time curating clips and posting them on various stock sites. There are a lot of hoops to jump through and I'd like to cut down on the formats that no-one is buying.