When someone buys something and then sells it to someone else, this process is commonly referred to as "reselling." In a broader context, it can also be considered part of "retail" or "arbitrage" if the buyer sells the item for a profit, often leveraging price differences in different markets. Reselling can happen in various forms, including online marketplaces and secondhand sales.
An antiques dealer.
A business to business transaction is where one business buys something from another business. An example of this is a doctor office buying a pack of paper from an office supply store.
Any individual or firm that buys and/or sells securities and is registered with the SEC is a broker dealer. A broker-dealer refers to a firm that trades securities for itself and for other customers. When a trade is completed for the customer they are considered brokers and when it is completed for their own firm they are considered dealers.
vertical intereragtion
Vertical Integration.
It would not be considered theft. Once someone buys something from you, it is theirs. They can do whatever they want to do with it.
investor
When someone buys something, that action of buying is called a "purchase".
someone who sells goods someone who sells goods Supply and Demand.
An auto trader is someone who buys and sells cars.
Stock trading.
I think that it is called Mercantilism
Someone who buys things in bulk then sells them on to retailers.
An antiques dealer.
A Stock Broker.
after someone buys something
Brokerage house.