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
As Orlove noted, barter may occur in commercial economies, usually during periods of monetary crisis. During such a crisis, currency may be in short supply, or highly devalued through hyperinflation. In such cases, money ceases to be the universal medium of exchange or standard of value. Money may be in such short supply that it becomes an item of barter itself rather than the means of exchange. Barter may also occur when people cannot afford to keep money (as when hyperinflation quickly devalues it).
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.
It’s hard to answer that without actually seeing a modern gift economy in action. Luckily, modern gift economies actually do exist. On a small scale, they exist among friends, who might lend each other a vacuum or a cup of flour. There’s even an example of a gift economy on a much larger scale, albeit one that’s not always in operation: The Rainbow Gathering, an annual festival in which about 10,000 people gather for a month in the woods (it rotates among various national forests around the country each year) and agree not to bring any money. Groups of attendees set up “kitchens,” in which they prepare and serve food for thousands of people every day, all for free. Classical economists might guess that people would take advantage of such a system, but, sure enough, everyone is fed, and the people who don’t cook play music, set up trails, teach classes, gather firewood, and perform in plays, among other things.
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.
In the United States, Karl Hess used bartering to make it harder for the IRS to seize his wages and as a form of tax resistance. Hess explained how he turned to barter in an op-ed for The New York Times in 1975. However the IRS now requires barter exchanges to be reported as per the Tax Equity and Fiscal Responsibility Act of 1982. Barter exchanges are considered taxable revenue by the IRS and must be reported on a 1099-B form. According to the IRS, "The fair market value of goods and services exchanged must be included in the income of both parties."
Other anthropologists have questioned whether barter is typically between "total" strangers, a form of barter known as "silent trade". Silent trade, also called silent barter, dumb barter ("dumb" here used in its old meaning of "mute"), or depot trade, is a method by which traders who cannot speak each other's language can trade without talking. However, Benjamin Orlove has shown that while barter occurs through "silent trade" (between strangers), it also occurs in commercial markets as well. "Because barter is a difficult way of conducting trade, it will occur only where there are strong institutional constraints on the use of money or where the barter symbolically denotes a special social relationship and is used in well-defined conditions. To sum up, multipurpose money in markets is like lubrication for machines - necessary for the most efficient function, but not necessary for the existence of the market itself."
Swap.com has also generated revenue by selling tickets to live events, like the popular Sip & Swap bartering mixers that’ve been held nationwide in cities from New York to Los Angeles. Ticket holders bring in items from their home that they want to trade—including clothing, books, DVDs, and baby supplies—and everything is up for grabs. “When we let everyone in,” says Melissa Massello, one of the self-appointed “Swapaholics” who host the gatherings, “it’s sort of a mad dash to get the best stuff.” There is shoving, she says, and it can get physical.
Anthropologists have argued, in contrast, "that when something resembling barter does occur in stateless societies it is almost always between strangers, people who would otherwise be enemies." Barter occurred between strangers, not fellow villagers, and hence cannot be used to naturalisticly explain the origin of money without the state. Since most people engaged in trade knew each other, exchange was fostered through the extension of credit. Marcel Mauss, author of 'The Gift', argued that the first economic contracts were to not act in one's economic self-interest, and that before money, exchange was fostered through the processes of reciprocity and redistribution, not barter. Everyday exchange relations in such societies are characterized by generalized reciprocity, or a non-calculative familial "communism" where each takes according to their needs, and gives as they have.