How did Banksy profit from this? The value went up after the sale..
The only other point in the article that I disagree on is the part about why Banksy's piece was auctioned last. He compares it to the random chance of being last and says that it is very very unlikely that it would randomly be last. As if the order is_ ever random in an auction. Obviously we need to know about the other pieces in the auction. Maybe the Banksy piece was last because it was expected to sell for the most, nothing to do with any gimmicks. Asserting that it's either "on purpose" or "completely random" is a bit silly, there's clearly something in-between.