What: Robert Marc
When: 10/10-10/12; Wed.-Fri. 10 a.m.-8 p.m.
Where: 782 Madison Avenue, between 66th and 67th Streets (212-737-6000); 190 Columbus Avenue, between 68th and 69th Streets (212-799-4600).
Why: Who can argue with sunglasses and frames at 80 percent off? Matt Damon, Cindy Crawford, and Meg Ryan are all fans. Do they pay retail?

What: Tocca
When: 10/8-10/13; Mon., Wed., Fri., 10 a.m.-6 p.m.; Tue.,Thurs., 10 a.m.-7 p.m.; Sat.,10 a.m.-4 p.m.
Where: 261 West 36th Street, between Seventh and Eighth Avenues, second floor (212-929-7122).
Why: Because dresses are $85, coats are $125, and cashmere sweaters are $80. Don’t go hankering for some floral number: Think cozy fall threads and such.

What: Badgley Mischka
When: 10/17-10/21; Wed.-Sun. noon-6 p.m.
Where: 123 West 18th Street, fourth floor gallery (212-921-1585).
Why: Because nicer gowns are hard to come by, and when they’re up to 90 percent off, are you going to complain? The urban-chic designer dresses such buxom ladies as Jennifer Love Hewitt and Tori Spelling. Over 1,000 pairs of shoes, fall gowns, and bridal dresses will be on sale.

What: The Mystery Sale
When: 10/3-10/7; Wed. 8 a.m.-8 p.m., Thurs.-Sun. 10 a.m.-8 p.m.
Where: 600 Broadway, at Houston Street (212-239-7272).
Why: They’re being all hush-hush about where the stuff comes from, but oh, the choices! Designers include Miu Miu, Robert Clergerie, and Daryl K., as well as some other designers too cool to list. Prices are up to 90 percent off.