Paying For Notre-Dame Repairs

The historic Notre-Dame cathedral is an impressive sight or rather it was before yesterdays fire but the Catholic Church is vowing to rebuild it.
I have seen it a couple of times, caught a pickpocket dipping his hand in my bag the second time as we queued, but it is a magnificent building, inside and out. 
After the smoke and flames had subsided it was good to see the two huge front stone towers still standing apparently unharmed and the skeleton of the building remains which gives the restorers a chance of rebuilding.
The cost of rebuilding the Cathedral is expected to cost near two billion Euros and an International appeal has already been set up with donations so far topping €600m.
The Catholic Church has an estimated wealth of over 15 billion Euros so as magnificent and uplifting as the Notre-Dame Cathedral is, with respect, they can afford to pay for their own bloody cathedral.