Look at an auction to see how the market sets the price. When this all blew up I had a nephew that put a 3-pack of 30 round magazines on Gunbroker with a start price of $0.01. He sat back and watched it sell for around $240. That worked so well he sold another 3-pack but saner heads prevailed and he only got $150 for that one. He then bought a plane ticket and went to his sister's wedding. He forced no one to bid, no one to buy.
"What kind of man would put a known criminal in charge of a major branch of government? Apart from, say, the average voter." - Terry Pratchett