Capacity to buy and sell is regulated by the general law concerning capacity to contract and to transfer and acquire property.

Where necessaries are sold and delivered to a minor or to a person who by reason of mental incapacity or drunkenness is incompetent to contract, he must pay a reasonable price for them.

In subsection (2) above " necessaries " means goods suitable to the condition in life of the minor or other person concerned and to his actual requirements at the time of the sale and delivery.