Well, never heard about them (The Mobile Base), bar one there were no other reviews on them on the net as well - yet I went ahead and purchased. Mainly b'coz I needed a particular model of phone and no one else was selling it. AND boy, I am pleasantly surprised!
1) Fast Shipping. Shipped the same day.
2) Replies our queries.
3) Item received as advertised.
4) Their choices: Mint, Good, Fair - are very well stated.
5) Item works perfectly.
I have no qualms about recommending this seller to others.