Goods and services with elastic demand usually have many substitutes. As to whether fluid milk has an inelastic or elastic demand, four studies were entered onto the record, some drawing opposite conclusions.Taxpayers do much of the calculation of the tax base in filling out the federal form. b. In economics, we use elasticity to measure the responsiveness of buyers and sellers relative to the change in the price of goods and services. Unrecorded agreement of contract for the sale of land. NEGLECT. The lack of proper maintenance for a building or structure. (Ord. Demand can be classified as elastic, inelastic or unitary. An elastic demand is one in which the change in quantity demanded due to a change in price is large. Incidence of the subsidy falls on sellers of homes in markets with relatively inelastic supplies and relatively elastic demands. 9. Elasticity shows how sensitive quantity is to a change in price.