Internet comparison shopping sites like shopping.com and pricegrabber.com allow consumers to compare prices of substitute products much more easily than is possible without the internet. these sites have:
The answer is; "these sites have increased the cross-price elasticity for substitute products".
When we evaluate the responsiveness
of the demand for any good towards the change in the price of a related good
is known as cross price elasticity of demand and it is
always measured in terms of percentage.
