About to do a private purchase from another person

Description

Hello, I had a question. I am about to purchase something from a party. They are not a website like eBay. It is an individual. He is happy to do the transaction and I pay them from my PayPal. The item is a computer. If I do this, he has sent me a PayPal invoice with complete description and also describing the condition, etc. In the invoice he also attached images (jpegs) of the computer on and it’s condition. If I use PayPal, will I have the buyer protection with this detailed and fairly comprehensive invoice? I would be paying in full. I can also attach the invoice for you to view if you like. I was advised by a friend to contact PayPal and have them look up the person using their email to check the history of this fellow PayPal user. The person has included his name, address, email and telephone number on the invoice. Any insights and advice would be appreciated. Thank you as I need to know before I can proceed. Sincerely, Eric