Yes I am pretty sure it is but they chargeback as the item is used or not working. Which is tough to proof for seller. And buyers can do that by just showing fake images. So in digital business that is a very big issue. You know in CD Key business for example suppliers order about 15000 keys and people steal about 5000 keys from that much stocks. So it is a very very big issue even larger companies have.I'm pretty sure it's against paypal's terms of service to charge back these virtual items as long as you have proof they were sent.
