So There's a Gypsy and a Doctor (old Croatian joke) The gypsy and the doctor are both in the market looking for houses. So the doctor decides that he wants his own custom house. So he buys a plot of land. And, seeing the doctor as a smart man, the gypsy does the same.
Once construction on the houses had begun, the gypsy copied everything the doctor did. The doctor put stones on his house, so did the gypsy. The doctor built an interlock drive way, so did the gypsy. In the end, both had identical houses.
A few months later, being the flexible person he is, the doctor decides to get his house appraised, and so does the gypsy.
When the real estate agent asked the doctor how much he thought the house was worth, the doctor immediately said 1 million dollars. And so the real estate agent put up that price. Then the real estate agent asked the Gypsy what he thinks his house is worth, and instantly the Gypsy says 1.2 million dollars. The real estate agent asks the Gypsy why he thinks his house is worth more if they both have the exact same, identical house. And the Gypsy responds "because who ever buys my house has a doctor for a neighbour, but whoever buys his house gets a Gypsy!"