No academics I talked to were aware of any evidence that barter was actually the precursor to money, despite the story’s prevalence in economics textbooks and the public’s consciousness. Some argue that no one ever believed barter was real to begin with—the idea was a crude model used to simplify the context of modern economic systems, not a real theory about past ones.
Economic historian Karl Polanyi has argued that where barter is widespread, and cash supplies limited, barter is aided by the use of credit, brokerage, and money as a unit of account (i.e. used to price items). All of these strategies are found in ancient economies including Ptolemaic Egypt. They are also the basis for more recent barter exchange systems.
For example, the market for national security payloads and NASA missions (James Webb is a notable exception, bartered between NASA and ESA) are typically closed to Arianespace. — Eric Berger, Ars Technica, "As the SpaceX steamroller surges, European rocket industry vows to resist," 20 July 2018 Friends told the British press that Rowley would often search dumpsters for items to barter or sell. — William Booth, Anchorage Daily News, "Woman exposed to nerve agent in southern England dies; police launch murder investigation," 9 July 2018 Anyone who unlawfully captures or kills a big game animal and then sells or barters the animal is guilty of a felony. — Dustin Gardiner, azcentral, "10 Arizona laws that actually exist: Private armies, food-wasting ban, windshield repairs," 27 June 2018 This early depiction suggests that although chocolate was being bartered at this point, it may not have been traded as a form of currency, Baron says. — Joshua Rapp Learn, Science | AAAS, "The Maya civilization used chocolate as money," 27 June 2018 To generate publicity, the cash is handed out at ceremonies held in the weekly roadside markets where villagers gather to barter meager fish hauls for goods like plastic buckets or quart bottles of gasoline. — New York Times, "Nearly Eradicated in Humans, the Guinea Worm Finds New Victims: Dogs," 18 June 2018 Prize is not transferable or redeemable for cash and may not be sold, bartered or auctioned. — Union-tribune Rewards, sandiegouniontribune.com, "Enter to Win Two Tickets to San Diego Legion's Inaugural Rugby Season as well as a gift certificate to Hundred Proof!," 11 May 2018 Others report punishment for having hoarded, rationed or bartered for menstrual products. — refinery29.com, "Meghan Markle Has Championed Menstrual Equity — Here's Why You Should Too," 21 May 2018 As the city bartered for water with local farmers and hustled to build desalination plants, its residents simply started using less water. — Ryan Lenora Brown, The Christian Science Monitor, "Squeezing more out of taps: How Cape Town cut consumption in half," 30 Apr. 2018
Make the deal. After you've found a barter partner, get the agreement in writing. Make sure you detail what services or goods will be involved, the date of the exchange (or work to be done) and any recourse if either party reneges on their part of the deal. If you are working through a membership-based bartering association, they will likely provide all the structure and paperwork you need for the deal.
Bartering is based on a simple concept: Two individuals negotiate to determine the relative value of their goods and services and offer them to one another in an even exchange. It is the oldest form of commerce, dating back to at time before hard currency even existed. (Learn more about how bartering evolved, read The History of Money: From Barter To Banknotes.)
But various anthropologists have pointed out that this barter economy has never been witnessed as researchers have traveled to undeveloped parts of the globe. “No example of a barter economy, pure and simple, has ever been described, let alone the emergence from it of money,” wrote the Cambridge anthropology professor Caroline Humphrey in a 1985 paper. “All available ethnography suggests that there never has been such a thing.”
In his analysis of barter between coastal and inland villages in the Trobriand Islands, Keith Hart highlighted the difference between highly ceremonial gift exchange between community leaders, and the barter that occurs between individual households. The haggling that takes place between strangers is possible because of the larger temporary political order established by the gift exchanges of leaders. From this he concludes that barter is "an atomized interaction predicated upon the presence of society" (i.e. that social order established by gift exchange), and not typical between complete strangers.