The market for "rare" Porsche models is getting out of control. The 911 GT3RS had a base price of $175,900, yet if you want a used one, you will probably pay at least $300,000. The 918 is an even worse offender! New 918s were sold for $845,000, but are now worth $1.5-$1.8 million. Clearly the demand for limited edition Porsche models has never been higher. That is why a dealership called Hoefnagels has a 911 50th Anniversary edition listed for €209,500 ($236,357), nearly double its $124,100 price from 2013.

The 50th Anniversary 911 was limited to just 1,963 models and came with unique styling cues. The car was powered by a 3.8-liter naturally-aspirated flat-six, upgraded to 430 horsepower. The car also had 20-inch Fuchs-style throwback wheels and unique checkered interior to hark back to the original 911. We predicted that these cars would have a big resale value, and it turns out we were right. No one knows when the Porsche collector bubble will burst, but until it does, buy every special edition Porsche that you can afford.