Plenty of examples of market manipulation in real estate. I know, I've seen it in action. Fortunately I didn't get sucked in but an in-law did.
He bought a vacant beach front site here on the Gold Coast for millions and then spent a few more million on the house. " It can't ever go down" was his confident prediction.
What he didn't know was that the agent acting for just about every sale along the strip had created an artificial market of inflated prices. He started the ball rolling by arranging for a few owners of existing houses along the strip to buy each others' properties for a very high mark up. In reality the only costs they incurred were transaction fees. ( And even these fees were probably deferred. At least that's how I'd do it. The transaction costs on $multimillion properties are quite high and if you are testing the response to this scheme why not have long deferred contracts which can be nullified if the scheme fails to ignite the fuse. Just guessing this part).
Anyway, these high prices caused a lot of interest and suddenly there was a new market. There is more to it than that but I won't stress your indulgence to understanding the comparison, at the time, of the difference between Gold Coast beach front, which had languished price wise, and say Sydney beach front which was, and still is, some of the most expensive property in the world. This was a big part of the perceived value in buying Gold Coast beach front.
The cabal in on it sold out at the high prices cashed up new buyers were rushing in to pay. ( They may have shorted their properties based on what I stated earlier. I don't know if this was done for sure but again that's how I'd do it ).
Then the GFC hit and I bet you can guess what happened next.