I have set a Shipping price in my PayPal button but it is not showing correctly during the PayPal checkout? Help!
This is happening because a setting in your PayPal account is overriding the value set by the PayPal button.
To update this, login to your PayPal account, and in your Profile, update the your shipping methods. Make sure that "Use the shipping fee in the transaction instead of my calculator's settings" is checked. Save your settings, and the PayPal button will behave correctly.