How to show price calculations without processing payments?
If you want form users to view price calculations, but not to be redirected to a payment processor, then use the following email address: firstname.lastname@example.org. Type it instead of your PayPal address when enabling PayPal as a processor in your Settings → Payments section. Assign prices to fields and click Enable payments for this form. Form users will be taken straight to your final Thank You! message after viewing the price calculations.