Plaintiff in a suit on open account seeking to recover $1,678 appeals from the judgment based on a verdict for $500.

The difference in amount approximately represents the only controversial item in the account, a machine called a peanut shaker. The defendant pleaded and introduced testimony on total failure of consideration and breach of implied warranty, i.e., the machine was totally worthless for the intended purpose of shaking peanut plants since it jammed up constantly and also stripped many plants.

1. The court did not err in allowing defendant and his son to testify concerning the value of the machine. Not only was there a sufficient basis shown for this opinion evidence under Code 38-1709, but plaintiff did not object on that ground at the time of the ruling. Brown v. State, 115 Ga. App. 813 (156 SE2d 180).

2. Similarly, the enumerations concerning two parts of the court's charge are without merit. Neither was objected to at the time on the ground which plaintiff argues on appeal. Black v. Aultman, 120 Ga. App. 826 (172 SE2d 336); John Deere Co. v. Lindsey Landclearing Co., 122 Ga. App. 827 (178 SE2d 917).

4. The evidence did not demand a verdict for plaintiff in the full amount. There was sufficient evidence to support the actual verdict.