if nobody buy vs if nobody buys

Some examples from the web:

• Well, you can't sell no wood if nobody wants to buy no wood, can you?
• Frustrated artist relegated to teaching 'cause nobody buys his stuff.
• Hammond, listen, nobody buys a classic television.
• - Do not worry, nobody buys me.
• Nobody buys a new suit even to be buried in.
• However, this is stuff that nobody buys... Only some poor wretch.
• Nobody buys illusions that kill you for real.
• Nobody buys people cookies for no reason.
• Worst case, nobody buys the phony confession and then the world has to stop while we negotiate their release.
• You, the FBI... nobody buys this guy as a killer, but the evidence points right at him.
• Well, Miss Gravely, all I know is nobody buys them.
• They have those Oscar de la Renta ties that nobody buys.
• Look, Mr. Wegman, nobody buys a $15,000 watch in a hotel lobby.
• Well, Miss Gravely, all I know is nobody buys them.
• In our region nobody buys any houses, everybody... left his house and went to other countries.
• I'm just going to hold on to it so nobody buys this thing.
• No wonder nobody buys our tofu any more.
• Nobody buys her turtles except me, do you understand?
• Nobody buy you those new bikes, too?
• If nobody scores in the next minute, we are going into overtime.

Some examples from the web:

• Well, you can't sell no wood if nobody wants to buy no wood, can you?
• Frustrated artist relegated to teaching 'cause nobody buys his stuff.
• Hammond, listen, nobody buys a classic television.
• - Do not worry, nobody buys me.
• Nobody buys a new suit even to be buried in.
• However, this is stuff that nobody buys... Only some poor wretch.
• Nobody buys illusions that kill you for real.
• Nobody buys people cookies for no reason.
• Worst case, nobody buys the phony confession and then the world has to stop while we negotiate their release.
• You, the FBI... nobody buys this guy as a killer, but the evidence points right at him.
• Well, Miss Gravely, all I know is nobody buys them.
• They have those Oscar de la Renta ties that nobody buys.
• Look, Mr. Wegman, nobody buys a $15,000 watch in a hotel lobby.
• Well, Miss Gravely, all I know is nobody buys them.
• In our region nobody buys any houses, everybody... left his house and went to other countries.
• I'm just going to hold on to it so nobody buys this thing.
• No wonder nobody buys our tofu any more.
• Nobody buys her turtles except me, do you understand?
• Nobody buy you those new bikes, too?
• If nobody scores in the next minute, we are going into overtime.