Russia is going to be the most expensive World Cup since the World Cup. It is going to be Russian media.
source
It is thought that the total cost of the World Cup will not be the finals of the World Cup, before it can surpass all the World Cups.Russia has created 6 new stadiums on the occasion of the World Cup and has reformed 6 old stadiums. Temporary installation made some installations. Russia government has spent more than 80 billion dollars.
source
After the World Cup, the stadium and the establishment will be renovated, so that the Russian government has already planned it will cost more than 32 thousand crores.
source