this is why you have to do your home work on pricing, though in this case there are fewer seller but in most cases there are many and even in the case of going overseas
and shipping is such a mixed bag, are you paying for fast shipping, which normally is little if any fast, slow shipping which is normally fine but cost way less
the total cost is your objective but in this case it could be all about a very large shipper vs a very small shipping company and as a company you have to cover shipping but again not make money on it
I favorite kind of shipping is free and it will make my mind up most of the time