How can I remove the word Free after an option in Paypal field?

The option is not a free option, but the price will be told upon request. 

The last product item, right? If yes, you can use the following custom CSS codes, inject this to your form:

#input_12_1009_price {

display: none;

}

Follow this guide: http://www.jotform.com/help/117-How-to-Inject-Custom-CSS-Codes

Let us know if you need any further assistance.

Thanks