A sneaker sale gone bad left a man robbed at gunpoint in Times Square, police said.

The victim was trying to sell his kicks for $350, and arranged to meet the potential buyer at West 41st Street and 7th Avenue after they sent each other Facebook messages.

But the 1 pm meeting went sour when the buyer and seller couldn’t agree on a price, cops said. As they argued in a subway station, the would-be buyer handed over some of the cash, then claimed he didn’t have the rest, authorities said.

That’s when the buyer flashed a gun.

“He showed the gun, stole his sneakers and ran,” a witness recalled. “I just saw him running.”

The thief also grabbed his cash back from the victim before fleeing. No one was hurt.