I just got the PayPal add-on for Gravity Forms today. I was impressed with how easy it was to integrate a form with PayPal.
We are a nonprofit and we're having a benefit concert where tickets are $50 apiece. You can select 1-10 tickets, with the total multiplied out. You can also select an option that if you can't make the concert, you can still make a donation (when you select this option the amount field is blank). Additionally, you can also make an additional donation on top of the cost of the ticket(s).
When you click submit to go to the PayPal Sandbox I have set up, it mushes everything together rather than showing line items. You can see a screen shot here:
http://benedictinewomen.org/wp-content/images/paypal-line-item-error.jpg
Any thoughts on this?