Sort:  

Market rate is much lower afaik, generally around 15-20% per year, occasionally a bit higher but certainly not 50% per year.

But if you were just citing the number for illustration of the significant value being given then the exact number isn't that important. It wasn't clear to me from context that was the intent.

He's using blocktrades pricing.

It's off by a factor of 10.
Edit: Maybe 5 since HF 21. But still waaaaay off.

That is blocktrades pricing vs. Dlease pricing. They are quite different.