Step 1: In a Contact Form 7 form, click on the drop-down menu button.
Step 2: Enter your options. Use a pipe “|” to separate your values from your price. Any character is allowed on the left of the pipe, but only numbers are allowed on the right.
Step 3: Copy your drop-down menu form code so that you can use it on the PayPal tab. It should look something like the image below.
Step 4: On the PayPal tab of your form, you can use your form code ( in this example it is menu-134 ) and use it in the Dynamic Values section.
Entering the form code in the Price Code 1 input box will allow you to link the price to PayPal item 1.
You can optionally enter the same form code in the Description Code 1 field. This will allow the description to be passed as the name of PayPal item 1.
Step 5: Save the form and copy the code to a new page or post just like normal. When you view it on your site, it
should look something like the below image.
Step 6: After you choose an option from the drop-down and submit the form it will redirect you to PayPal and you will see your price and the name of the item.