It seems that the latest fad (or "business opportunity"?) is for the mobile coffee van to be vending its wares to the crowd attending the Saturday morning auction. When I saw this, I rather hoped that it had been arranged by the auctioneer to get the crowd in a good mood, but, no, payment was required. But the property was passed in, with just a single bid being made (in addition to the vendor bids). Would it have been different had the coffee been "on the house"? (Pity about the pun).
EDIT - I've since been told that some agents do in fact arrange for the coffee to be provided free of cost (free to the crowd - the agent or no doubt ultimately the property owner pays). Note to self - choose auctions more carefully.
However, later in the day (some time after the van, and the crowd, had departed!), a "sold" sign appeared.