The Patreon page makes it look like you can unlock this for $1. splineVR allows custom pledges.
I pledged him a dollar, and it turns out it's not available at that price. That was fine I was going to leave him the dollar anyway. I was considering upgrading to the $10 to unlock this, but now he blocked me, apparently for being so rude as to give him a dollar...
At least have the courtesy of refunding me that dollar if you're going to block me.