Cautious about this Craigslist offer...Help?

I notified him how I won't accept PayPal as a form of payment when I have no other info on him. Also told him that the camera will be listed on eBay when I get the chance and if so, he can buy it then. I only listed it on CL first to see if I could maybe trade for another camera. Is there a chance that he is truly interested in the camera? Yes, that's why I wasn't shutting him down immediately. If he is truly interested he will reply back.

I've never even heard of a USPS Money Order to be honest, so I didn't know that was an option. Lookie here, I learned something!

67Dart273: It's a Calypso underwater diving camera. It's extremely similar to the Nikonos, because Nikon bought the design for the French camera in 1963. They were only made for one year and in a small quantity since it was a small business.