Price tab is the third tab that is seen in Add New section. Under price tab, you will find the field where you can enter the price for your trips.
Price Per: This field allows you to chose two option in drop-down i.e. Person and Group which you choose according to your requirement.
Price: This filed allows you to enter the price of the trip.
Enable Sale: With this option, you will be able to enable sale price of the trip if required.
Sale Price: This option allows you to enter the sale price.