Final answer:
The appropriate amount to purchase for 2 people depends on the average cost of the items or services the gift certificate can be used for.
Step-by-step explanation:
When selling a gift certificate, the appropriate amount to purchase for 2 people depends on the average cost of the items or services the gift certificate can be used for. Let's say the average cost per person is $50. In that case, an appropriate amount to purchase for 2 people would be $100.