Rather, it's likely that they've set the price to £0.01 as a default when it's sold out. £0.01 is certainly a tad too low, yes.
A woman goes to her butcher Feinberg and asks the price of lamb chops.
"$2.50 a pound," he tells her.
"But Cohen across the street sells them for $2.00 a pound," she protests.
"Nu, so go buy from Cohen," says the butcher.
"He's all out," she explains.
"Oh," says Feinberg, "when I'm out of lamb chops they're only $1.50 a pound."