Their rates were about 4 BTC to rent 1 TeraHash/s of mining capacity for 24 hours. Some of their pools for rent had 1800 miners, some were solo operations. I was looking into renting mining time through them a few days ago.

At this price rate, the ~4000 BTC could be 1 or 2 days of rental fee for a couple hundred transactions. No idea about their volume of transactions or cash flow.