Where do you see that? I can't even see the $500 plan on their pricing page.
The $200 cut to 10x was announced only formally on Twitter
However none of their product pages mention concrete #s, so I guess value will only degrade more over time.
It's strange if that ends up to be this way. It's hard to see why would anybody subscribe to the $200 - or even the $500 for the sole benefit of using ultrafast (depleted probably within hours).