OK, OK, so this Manhattan townhouse is only 9,000 square feet, but for these purposes it's a mansion: the security, home theater, heating/cooling, and phone can all be controlled by some whizbang iPhone app and the property is also stocked with heated floors, a silent pneumatic elevator, a geothermal wine room, heated towel racks, dog bath, and a heated sidewalk with snow sensor. Then there's the decidedly mansion-esque price: $75K a month.

This nearly 12,000-square-foot property in Delray Beach, Fla., comes with a master bedroom "done in the style and size of one of the finest Presidential suites" and "second levels overlooking long dunes reminiscent of the Hamptons in New York." Jeez, you'd think a place with 100 feet of private ocean frontage wouldn't have such an inferiority complex. And it shouldn't, not for $50K a month.

Perched on the edge of ritzy Star Island, this seven-bedroom manse has been looking for a buyer for a while, having first been put on the market for $19.8M in 2007. A series of de-listings and re-listings have landed the 10,600-square-foot home where it is today: angling for someone to pay $50K a month to live in it.

This Fort Lauderdale home is asking $17,999 a month and is at once "stunning," "magnificent," "turnkey"; plus, it offers "three floors of pure luxury softly curved around a floating three story staircase!" The 14,000-square-foot, five-bedroom manse also has an infinity pool on the grounds.

With Oprah's swank Chicago co-op officially off the rental market, this four-bedroom Victorian serves as a pretty decadent consolation prize. Perched in one of the prettiest parts of the city, the 10,000-square-foot manse is asking $30K a month.

This new-to-market listing has 6,100 square feet of living space, views of Aspen Mountain, and, best of all, a hot tub on the roof. The five-bedroom ski chalet has more modern interiors than one would expect and is renting for $65K a month.

The indoor pool is easily the pièce de résistance in this $18K/month Arizona mansion: it has retractable glass doors and a ceiling with "fiber-optic 'stars' and a perfectly circular ring with a cobalt neon light to match the pool tile." Elsewhere there's Turkish limestone flooring and views of a geyser.

This five-bedroom, 14,000-square-foot mansion sold for more than $6M in June 2010, and is now available as a short-term rental for $60K a month. It's sited on top of a mountain with 180-degree views: not too shabby.

Here's a Spanish-style mansion in "The Ranch" that's asking $35K a month. Inside are rustic post-and-beam ceilings, stone mantels, and wood cabinetry.