It might be a good idea to take a look in the attic to see if you happen to have this LEGO set new in the box, although the chances are slim....

LEGO 4000031 Exclusive T-Rex is a 70-piece set featuring a T-Rex on a pedestal. This was a very limited exclusive T-Rex promotional prize that was given away in various stores. Only 500 sets were produced worldwide. The set was released on June 1, 2018 and was "retired" on June 14, 2018, 2 weeks later.

Due to its exclusivity, this set has increased in price immediately after its release, and now prices of up to 10,000 euros are being asked for this set. There are currently 4 sets offered with prices ranging from 6500 euros to just over 10,000 euros...

Do you see this set as a good investment?