How much does it cost to develop and publish VR games for PlayStation 4?

I've been told that Sony has eased up their restrictions and costs on publishing games for their platform now, but then I have read that it's a minimum cost of $2500 to Sony to get started. I can't seem to find a straight answer even on Sony's site.

Then of course you have the cost of a PlayStation 4 and the VR system itself which are straight forward.

Are there still fees involved with Sony to develop on their platform and if so what are they?