Back on topic,
It's been said here that the DR market is a different animal than the one in NA largely because few properties are bought using a mortgage. As a result, most are held free and clear, and owners therefore feel much less pressure to move them than if they had a monthly note to make.
As Monty said, there's often a difference between the realistic value of a property, and the seller's price. Sometimes the premium represents how much they overpaid. Other times it's the "dream tax," in which they've increased the price to reflect their aspirations of living in "paradise."
In that way, DR is similar to CR. You know, sort of how some folk insist on paying through the nose to live right on the water, when the far-better (and less expensive) properties are 10 minutes away in the hills where it's cooler, there's a cross-breeze, and you get less rusting.