Londoners may complain about the capital's glut of so-called "luxury" apartments - but the capital isn't the only place where luxury living has become a serious business.
Last week, Tel Aviv's Meier on Rothschild tower, completed this year, said it had made £165m of sales, including a penthouse which sold for £10m, setting a new record for the region.
Where does that put it among the world's most high-flying addresses? Here are the world's five most expensive high rise homes.
1. Antilia Building, Mumbai, £672m
Owned by Indian tycoon Mukesh Ambani, this precarious-looking 27-storey skyscraper cost an estimated $1bn (£672m) to build. The tower - which is a single home - features three helipads, floating gardens, and enough space to store 168 cars. Despite that, Ambani's children are responsible for cleaning their own rooms.
2. Odeon Tower, Monaco, £240m
Due to be completed later this year, the 560ft, 49-storey Odeon Tower will be the tallest building on the Mediterranean - and the first new high-rise to be constructed in Monaco since the 1980s. The five-storey penthouse, which comes complete with an infinity pool with slide, nightclub and spa, is priced at £240m.
3. One Hyde Park, London, £140m
The Candy brothers, the developers behind Knightsbridge's most ostentatious address, are notoriously secretive about the prices they've achieved at One Hyde Park, which has a McLaren store on its ground floor and direct access to the kitchen of the Mandarin Oriental hotel next door. But reports suggest last year one of its penthouses was sold to an Eastern European billionaire for £140m, making it the world's most expensive apartment.
4. One57, New York, £67m
Completed last year, the 90-storey One57 building was until recently Manhattan's tallest residential building, until it was dethroned by nearby 432 Park Avenue. Earlier this year, an 11,000 sq ft, six-bedroom penthouse - which includes a luxury spa, cinema room and a library - sold for $100m, or £67m.
5. Meier on Rothschild Tower, Tel Aviv, £28.5bn
Compared with its peers, the 42-storey Meier on Rothschild may seem like a bargain - but with its penthouse on sale for £28.5m, that means it ranks among the world's most expensive addresses. If you're willing to live a little lower, prices start at £1.5m for a three-bedroom apartment.