Dan Ariely in his book Predictable Irrational has researched why people buy and the advantages of choices and comparables when shopping. No where is this more apparent than in Puerto Vallarta in the sales of time share properties. Everywhere one goes from the first contact after disembarking at the airport to breakfast, lunch or dinner at the hotel, there are people selling timeshares. And the comparables and choices get better with each offering.

The marketing message learned here is that people do compare offerings. And the presentation and promotion does make a difference. Basking in the sun with a fresh squeezed mango margarita makes owning a time share in a laid back place seem a wonderful opportunity for an inexpensive getaway. And the money also seems reasonable based on what vacations cost.