My interaction with this number was similar.  it started as follows via text:

"Hello seller, How are you doing today? Am highly interested in your item.  I want to know if the is still available for sale."

The conversation continued with small odd errors in grammar, common to someone who speaks English as a second language.  Nothing about the interaction felt normal.  I googled the phone number and found this site with the first post.  I then tried to call the suspicious buyer but they did not answer.  So i texted them back "Call me and well discuss it.  This seems odd to me.  I googled your number and it was posted that you were a classified scam artist.  Gotta love the internet!"

They never responded to my last text so i can only assume that they got tired of me and moved on to the next unsuspecting victim.

This number is a classifieds scam artist.  They sent me a text after I had posted several things for sale on an online classifieds for my local area.  They addressed me as "buyer" and wanted my "items".  They never specified what, but wanted the "item".  Weird.