Where to rent 4k Blu-Ray Discs Online?

I'm afraid that you're up Schitt's Creek.

A bit more of a hassle, but I buy them on eBay and then sell them when I get tired of them. Most aren’t that expensive to begin with and even if you lose money it probably won’t be more than the cost of a rental, assuming you could actually rent them. You can watch when you want and you don’t have to worry about late fees.

I'm mainly interested in new releases.  Once I see a movie, I don't ever care to see it again...which is why I don't buy movies.  I don't care to stream movies because the picture quality and audio on streaming isn't as good as a 4k disc.

https://4kbluray4u.com I have rented disks from them. I think its $15 a month, 1 disk at a time, unlimited per month 

Thanks galleybob...I'm going to give them a try.

I currently rent blu ray discs from Netflix, I can live without the 4k... but Netflix discs do not have Atmos encoding.