1920 s installment buying1920 s installment buying. . . What is an installment plan? An installment plan, is a method of buying on credit, enabling people to . . Department store and service station chains used massive buying power and operating . Formed in 1920 by Edwin C. . . . . . . An essay or paper on Consumer Spending in 1920. . Category: MiscellaneousPeople could buy stocks on margin which was like installment buying. . . What was the Installment Plan of the 1920? The Installment Plan o... more