Seems that you 0fb bidder is also bidding on another bike that ends in 3 days & also some camping gear x2.May be that they need x2 & hopefully not just doubling up hoping to win either.But yours finishes 1st anyway so should be ok.

They are probably a serious bidder,looks like they are planning a camping holiday by their bids. Just treat them like anyone else & guide them through anything they may need to know.It can be good training a nice newby & they appreciate their 1st positive experience.