Even high-end rentals are going fast. In just the three weeks since it arrived on the market, a four-bedroom apartment at 15 Central Park West, advertised for $55,000 a month, has gone to contract. The broker, Roberta Golubock with Sotheby’s International Realty, said she showed the apartment to eight financially qualified prospects.

Some New Yorkers defend their spending as investments or gifts to themselves. In August, Karen Borkowsky and Robert Kennedy, a partner in a law firm, were married at the Rainbow Room. The reception, which the event planner, Shawn Rabideau, lavished with glass and calla lilies, cost $150,000 to $200,000. But when Ms. Kennedy considered that she had survived breast cancer and, at age 41, married a guy she had dated in high school, the wedding’s cost seemed less exorbitant. Then, shortly after returning from their honeymoon, the couple started a $400,000 project to combine and restore two apartments into a three-bedroom, three-bath co-op on the Upper West Side. “We are investing in the longevity of the apartment,” she said.

There are also some people who say they have not been hurt because they have poured so much money into opportunities not available to the Main Street investor. Paul Parmar, a 37-year-old investor in companies specializing in health care, defense, media, luxury items and private aviation, says he is living just as large as ever.

In recent months, Mr. Parmar, who lives in Colts Neck, N.J., said he bought 140 acres in Mineola, Tex., and is spending $20 million to begin building a refuge there for abused tigers. Since January, he said he added to his car collection with a $110,000 BMW 750 Li (for his girlfriend) and a Bentley Arnage for himself, for about $300,000. He is leasing a Maybach through Luxautica, an “ultimate car club” that has annual fees of about $125,000.

“On a spending level,” Mr. Parmar said, speaking about a possible recession, “it doesn’t affect me at all.” That said, providers of luxury goods reported anecdotal evidence of a widening gap between the merely rich and the ultrarich. Clifford Greenhouse, who owns a household-staff employment company, said he suspects that the merely rich might be starting to lag behind their far richer counterparts, and are trimming their budgets. He cited reduced demand for chauffeurs  a relatively small-ticket service  yet ever-strong demand for private chefs, butlers and “household managers.”

Darren Sukenik, a real estate broker with Prudential Douglas Elliman, said that while business may be slower for clients with a mere million to spend on apartments, none of his clients with budgets of more than $2.5 million have stopped shopping. Seth Semilof, the publisher of Haute Living, a luxury magazine, said that luxury car dealerships that advertise with him are pushing Bentleys and Rolls-Royces at the expense of less-extravagant cars like the BMW 5 Series.

“If you look at the $20 million-plus market, it’s still strong as ever,” Mr. Semilof said. Some of the ultrarich are still willing to pay above sticker price for things they want badly enough. Mr. Semilof helped three buyers in the past two months acquire Rolls-Royce Phantom convertibles for as much as $200,000 above the asking price of $465,000.