People shop in many different markets. They can shop in the farmer's market, grocery store, department store, stores in malls, online stores, just to name a few. Income is one of the variables that affects how much people buy. Initial Post Discuss whether you have noticed that you increased your demand for a particular good or a service after your income has increased. Alternatively, have you observed an increase in demand for a particular good or a service on your friends, relatives or coworkers part after their income increased