Thanks for your reply!
I did purchase the Pro license and have experimented with its Coupon Manager. Although it doesn’t support exactly what I’m looking for, here’s what I’m thinking:
1. Person goes to a page to purchase a gift certificate worth $xxx, let’s say $50.
2. I’m notified of their purchase details through PayPal.
3. I then add a single-use (Total Coupons = 1) ‘coupon’ to Events Mgr Pro and give it a unique number that can’t be guessed! Let’s say: 0514-472630-98674 … which is worth $50. (Maybe use the PayPal Transaction ID)
4. The person can then apply this unique code to their next purchase.
It’s a bit of manual labor, but I think it could work.