I decided to buy a car from a dealer in a town 100 miles away because she was offering a price that was $300 lower than the price of an identical car from the dealer in my hometown. I went there and bought the car and therefore I saved $300.
Would your behavior be the same as mine (assuming you'd decided on the model of car you wanted)? Which factors would influence your decision?
Would your answer be different if the price offered was $1000 lower? Explain why or why not. How about $100 lower? Explain why or why not. Would the original price of the car ($2000 or $25,000, for example) make any difference to your decision in each case? Explain why or why not.