That's a buy order.
You DUMBASS.
Shows how you spammers make retard claims and believe their true LOL.
OK DUMBASS, why would the engine allow that buy order to exist in the first place? Unlimited KHS/MHS in the trading engine? Obviously it's a buy order but guess what if you go to Hashnest and try to buy 300 Ph/s worth of shares, IT WON'T LET YOU. Fancy that. Their orderbook limits you to buying what's available on their marketplace.
Any explanations for this, or shall we add it to the list of things you make up and can't substantiate?
Well, if you have enough cash you can go to an exchange and set a buy order for 20 million bitcoins.
Why should someone stop you? If there are not enough bitcoins in existence, it won't be processed in full or at all (if it can't be processed partially)
There are enough other good proofs, this one not.