I have an engagement ring listed on Craigslist and this exact same thing just came to my email.
I did text the number to see what the response was:
"I am located in IL but you would be shipping the ring item to my collague (CANT SPELL EITHER!) in Benin via Express Mail International of USPS and I am willing to pay an extra $100 to cover the shipping and insurance fee. Let me know if this works for you, I can only pay via paypall.

I am going to respond with something rather ugly! Especially since my ad says cash local sale only, no scammers need reply! GRRR this makes me soooo mad!