Hello. I am fairly new to PayPal and, in the past, have only used it for Ebay. I have found some equipment I need from an overseas seller who sent me a PayPal link that only generally identified what I am paying for. Is it a good idea to ask for something like an Invoice with a payment link? Does that exist? I fund my PayPal via American Express, but I want to increase my security in this transaction. I would appreciate any suggestions.