Bart has a good idea who probably funded the tower, but there would be far too many layers of protection to point at any level of Wayne Industries or whichever of the Robins it is.

"It was so much easier when Robin handled that stuff. The money, I mean. I still remember the time he managed to ship a Batmobile to the Tower and hide it in the Batarang budget."

He was still going to let Ray in the doors, but he'd be watching everything.