extravagant, wasteful (adj)
to spend extravagant amounts on sb/sth (v)

Link to present incidents:
On the corner of a prestigious garden address on London’s embankment a crowd is waiting for a tour bus to pick them up. But this isn’t your average hop-on-hop-off look at Big Ben and Westminster Abbey. The crowd is made up of journalists and this is a coach trip around some of the city`s most lavish foreign-owned houses which campaigners link to the Panama Papers. See The Guardian for article.