The phrase "a vendor at a" is correct and usable in written English.
It can be used when referring to a seller or supplier present at a specific location or event.
Example: "We found a vendor at a local farmers' market selling fresh produce."
Alternatives: "a seller at a" or "a supplier at a".
For example, you could ask a vendor at a farmer's market for a lower price on your vegetables.
It takes more than artistry to become a vendor at a crafts fair -- it takes business skill as well.
Texas law lets him buy handguns from unlicensed sellers (such as a friend or a vendor at a gun fair) and rifles or shotguns in licensed shops.
"They're waging a war of nerves against us," said Nasser Muhsin, a vendor at a rickety arcade of shops beneath the mosque's turquoise and tan minarets.
"We know we're being swamped," said a vendor at a roadside rotisserie near Liestal, "Switzerland has started a revolution in Europe".
Last night a man shot a vendor at a Las Vegas hotel-casino and then killed himself, the AP reports: Las Vegas police lieutenant Ray Steiber said the shootings happened at about 8.30pm near the Excalibur's front entrance.
A vendor at an adjacent stand, Rachiq Yassine, 32, from Brooklyn, also displayed Mr. Gach's T-shirt.
"It is a constant worry," says a vendor at Aïn Bénian, 40km from Algiers.
Furniture arrived slowly: a modernist black leather couch from a vendor at the International Contemporary Furniture Fair, a mini club chair from Maurice Villency.
He was a baseball fan who carried a coffee urn as a vendor at Wrigley Field in the 1920s.
Dave Schulter, 52, a vendor at Broadway and 44th Street, said a woman from Kansas had asked him if he had a "I Survived Hurricane Sandy" shirt before the storm even hit.
