Fifth Avenue in Manhattan is the home to many expensive shops. “If you can’t find it on Fifth Avenue, it probably isn’t worth finding” is a saying about the famous street.
   
The Fifth Avenue saying probably originated on the website NYC.com in 2013.
   
A slogan of Dallas, Texas—“If it can’t be found in Dallas, it can’t be found anywhere in the world”—is somewhat similar.
   
   
Wikipedia: Fifth Avenue
Fifth Avenue is a major thoroughfare in the borough of Manhattan in New York City. It stretches north from Washington Square Park in Greenwich Village to West 143rd Street in Harlem. It is considered one of the most expensive and elegant streets in the world.
 
NYC.com
Best Of Fifth Avenue 2019
A designer hasn’t hit the big time until they have a flagship store on New York’s fashion-famous Fifth Avenue. From jewelers like Tiffany & Co. to high-end designers like Louis Vuitton and Gucci to more mainstream apparel like Abercrombie & Fitch and Ralph Lauren, if you can’t find it on Fifth Avenue, it probably isn’t worth finding.
       
American Institute for Training and Development
February 24, 2013
Day 5, Thursday: State of New York
(...)
Free Time at the Fifth Avenue
Almost any upscale retailer has a prestigious store located at this street. A designer hasn’t hit the big time until they have a flagship store on New York’s fashion-famous Fifth Avenue. From jewelers like Tiffany & Co. to high-end designers like Louis Vuitton and Gucci to more mainstream apparel like Abercrombie & Fitch and Ralph Lauren, if you can’t find it on Fifth Avenue, it probably isn’t worth finding.
 
Twitter
Emily Park
@emiiillyy__
If you can’t find it on Fifth Avenue, it probably isn’t worth finding
11:43 AM - 24 May 2014
     
The Jerusalem Post (Israel)
‘ON THE AVENUE, FIFTH AVENUE’
A stroll along New York City’s grand boulevard.
BY BEN G. FRANK   OCTOBER 25, 2014 22:37
(...)
Want to shop till you drop? Head north from 42nd St. up to 60th. From jewelers like Tiffany & Co. to high-end designers like Louis Vuitton and Gucci to more mainstream apparel like Abercrombie & Fitch and Ralph Lauren, “if you can’t find it on Fifth Avenue, it probably isn’t worth finding,” says the website nyc.com, listing about 40 of the world’s most famous designers, department stores and electronic establishments such as the Apple Store, as well as Trump Tower.
     
ETB Travel News
Most extravagant shopping meccas of the world
September 21, 2015
(...)
Fifth Avenue – New York You know you’ve hit the big time when you find yourself shopping on Fifth Avenue in New York City. This street offers all of the high-end fashion stores and latest trends, as well as American souvenirs and shops to suit every budget. The lavish shops and affluence that adorn the streets of Fifth Ave are a sight to see. It’s no wonder that this area is considered amongst the most expensive and best shopping in the world. As the locals say, “If you can’t find it on Fifth Avenue, it probably isn’t worth finding”.
 
Twitter
lee bennett
@cheflongbens
Replying to @HollyGShore
. If u can’t find it on 5th avenue you ain’t gonna find it.  Enjoy NYC.
10:45 AM - 28 Aug 2016
   
Trips to Discover
Last updated August 16, 2018
18 Things You Must Do in New York City
By K. C. Dermody
(...)
Shop or browse Fifth Avenue
Fifth Avenue is like heaven for shopping enthusiasts as the home of some of the best shopping in the world. Whether you have a wallet full of cash ready to spend, or you just want to window shop, this is the place to go. Located in the center of Manhattan, the best Fifth Avenue shopping takes place between 39th and 60th Street at NYC flagship stores. You’ll find everything from Tiffany and Louis Vitton to Gucci and Saks Fifth Avenue – as the saying goes, if you can’t find it on Fifth Avenue, it probably isn’t worth finding.