Luxury at the cost of another family, that is what dowry is.
In some case groom demands dowry and in some, his beloved parents do. In both cases, that’s not the right family to send your daughter. Money seeking family just needs money, neither a good daughter nor a good wife for their son. If they are foolish enough not to count on the education, talent or smartness of your daughter, then please don’t proceed with any relation with them.