As far as I know, this wasn't the case until today's update. The last time I changed my accessories was 2 or 3 days ago so if it was, I never had to pay nor were they locked until now.
I read the patchnote and didn't see it mentioned but it could have been from a previous update that I might have missed.
The tiers are as follows :
Position : 0 Voxels
Rotation : 10 Voxels
Size : 50 Voxels



