Until you know what you're doing, only trade the 'official' way (items and money in ONE trade window at a time) - don't drop-trade, don't 'lend' stuff (you won't get it back), etc. Be very suspicious of people initially, unless it's a simple item-for-money trade.
Bring a small item for trading at the cache.
Xanthorrhoea is thought to be a useful trade item for Aborigines, trading to tribes who did not have access to it [16].
You can sell items for Ecoins at Trade n' Sell.
"To think about being a writer was to think that I had the whole world, and I really didn't, and I knew I didn't," said Mr. Jones, 53, who spent nearly two decades proofreading and summarizing news items for Tax Notes, a trade magazine, before he was laid off in January 2002.
Navajo textiles are highly regarded and have been sought after as trade items for over 150 years.
The children's toys are mostly second hand, and their clothes are hand-me-downs that John got through Freecycle.org, an international website with local groups that trade items for free.
When selecting a caching item to bring along for trading, consider that things like marbles, bouncy balls, key chains and batteries are popular trading items for geocaches.
Uthayakumar and Palanivel (2014) developed an inventory model for defective items with trade credit and inflation.
Ouyang et al. ([2006]) developed an EOQ model for deteriorating items under trade credits.
Parents send off their unwanted kids' items such as clothes and toys; the Valet service photographs, stores and lists the items; and the parents set the price they want to sell the items for (or chose alternative items to trade with).
