If you have the product price showing zero(0) when adding to cart, then please check that you have the More Option checkbox enabled/checked.
Checked/Enabled - Means the total price of the selected options will be added to the acutual product price
Uncheck/disabled - Means on the total price of selected options will be added for checked. So customer will pay only the total selected options price. This is use in cases where you are selling a whole varient of product as an option. E.g Product is Oil, then the options are 5kg, 10kg etc.
