I used the buy it now option to buy a pair of shoes, but cannot check out through Paypal because the seller has some issue with her account. She sent me an invoice through PP from a different account. I am wondering if I will be protected in the instance of a INR or SNAD if I pay using the invoice versus going through Ebay. I think I will be protected by PP, but what about eBay's new 100% satisfaction guarantee? Any insight is appreciated. Thanks!