Post the first part of the Skype chat, you deleted the messages after you took a screenshot. Show them the first part, and this case will be closed.
If you are in the conversation with him you can take a screenshot of the entire chat to post here.
If the other guy deleted his messages and yours are still there then that is obviously fishy. A person who got scammed would want to keep all of the evidence they can, not delete it.
The only message that is showing up in my chat is the one he sent me asking for a refund. The first messages are deleted