Learning the difference between the two concepts cannot be made easier! 1. Purchasing The maths on the Paul McCartney-Heather Mills divorce is as follows: After 5 years of marriage, he paid her $49 million. Assuming he had sex every night during their 5-year relationship it ended up costing him $26,849 per time. This is Heather. 2. Leasing On the other hand, New York Governor Elliot Spitzer's hooker, Kristen, an absolute stunner charges $4,000 per night. This is Kristen . Had Paul McCartney "employed" Kristen for 5 years, he would have paid $7.3 million in total, for sex every night for 5 years: (a $41.7 million saving). Value-added benefits are: * a 22-year old * no coaxing * never a headache * happily agrees to all requests * no complaining * no honey-do lists * has two legs Best of all, she leaves and comes back when asked. All at 1/7th the cost and no legal fees. Sometimes leasing just makes more sense.