I think you can list for free, I know I have never had to pay to list on ebay, just had to pay photo fees, then the selling fee, the being a human fee, and so on
Yes its the same seller, take a look at all his other kit listing's, he really has no idea about what to sell them for
http://www.ebay.com/sch/Toys-Hobbies-/220/i.html?item=190627843792&pt=LH_DefaultDomain_0&_sac=1&hash=item2c624e0ed0&_ssn=codyp2000