One can never have too much duct tape. That said, there’s not a fabric much cheaper than tulle at the fabric store. It’s usually about $1.00 a yard, or less. That would make a lot of repairs if you know how to run a sewing machine. You might even be able to use some fabric glue to glue the tulle in place, however I've never tried glue on tulle.
The mesh in my bee suit isn’t exactly the same as wedding tulle, but I think you could use tulle as a replacement. Just an idea.