I think this is a scammer.

This scammer tried to buy something on Craigslist across the country from me.  Was going to send me a cashiers check for a lot of money so I could pay the shipper for a lot of other items?  BE WARNED!!!

Same scam. For an item on craigslist.

Same thing, glad this site is here, was going to reply.

THIS IS A SCAM!!!!!!!! The SAME thing happened to me that happened to the above commenter, Nancy. They were buying something from me from TX, I am in NH. They were going to overnight me a travelers check along with having to pay the carrier when they picked up the item I was selling. I called to have a conversation with them, it went to a "Text Mail" VM system. They then texted me right away saying they couldn't talk, as they were hearing impaired from surgery they had a few weeks ago.