Someone who phoned up earlier in the thread asked if they could come and see the items and he said he'd call them back as he was driving. So it's possibly just used to gain confidence i.e. it must be legit or else he'd hardly say 'available for collection', type thing. He's maybe hoping for someone to be desperate for the items and ask if he could post them.
Maybe so! It's hard to tell as we don't know if he was driving or not or whether he was on to what was happening.

. 
