Wholesalers sell in shops and stores , and retailers sell to customers who buy or purchase . Second-hand stores sell used goods . Buyers can pay for by check, cash or buy it on the " installment plan ." To do this, they pay a deposit and then weekly or monthly payments in accordance with the conditions . 4 . Behind the counter , ready to serve you , the shopkeeper or shop - assistant or salesman ( saleswoman ) . They put their money in the cash register, give you a receipt and change, and finish the article purchased. You can get some free products (eg , free samples of shampoo , etc.). Some stores do not salesmen or saleswomen , but only cashiers . Clients choose the product they want and pay at the cashier . These stores are called SelfService shops . However SelfService shops sometimes there are people who do not pay for what they have taken off the shelves . Security measures and gadgets installed to prevent and detect shop -lifting ( theft). Many shops to install the camera scanners, which are quite effective. 5 . Many women prefer to shop in a market where products are usually cheaper . Owners stalls or mounds do not have such high costs , as the owner of the store. There we see people with carriers bags , baskets , parcels, and as well as a caddy . 6. People who can not afford what they want (for example , there is no money to be blown on something expensive ) , or who have not enough money in the family budget , go window shopping . Some people just enjoy it and spend their free time windows. Sometimes, however , people have to dig into their pockets to buy the thing they like most. 7. When we buy something , we pay money for it notes or coins . Checks, bankers ' and credit card is being used more and you can imagine a world where "money" to no longer be used as coins and paper money. Even today, in the U.S., in many places - especially gas stations - will not take cash at night for security reasons.