The kind of lighting you choose will be a huge factor in the cost of lighting installation. Simple lighting can be pretty affordable, but more expensive fixtures will bring up the cost of installation-as will antique chandeliers or fixtures.
a change in supply is the shift in supply curve due to change in price of other commodities and other factors like taste,weather,income e.t.c while a change in quantity supply â¦ is the change in price of the commodity itself that affect the quantity supply,here the supply curve remain constant but there will be a movement along the supply curve.
1 In other words, this is a movement along the demand curve. A change in quantity demanded is caused by a change in price.  Change in Demand: A change in demand is a change in the ENTIRE demand relation. This means changing, moving, and shifting the entire demand curve.