I cant access hashnest as I can't log in (due to broken 2fa on their side).

But when I was there there were a few things to consider.

The price changes througout the day, at 09:00 utc there would be a lot of volume and such a lower price would be observed, later on there would be less volume and less competition so the price would go up higher at about 21:00 utc it used to be a pain and a good thing. One was that it alsmost always happened so you could profit off the market a bit. Another was, if you wanted to pull out large amounts then you'd do it in the morning (as apposed to me who kept doing it in the evening and dropping the market prices quite substantially accidentally)...

It is possible they might be selling hashpower over the market though. What's the price per ghs or ths there?