It's the brand name, like corsair is. Probably can't get it here.
Get the same type and speed as you already have, don't mismatch them. Check link out, it'll give you an idea.
Amazon or Amazon marketplace? I'd have more faith in ebuyer that the RAM was genuine and not recycled than some of the amazon market place vendors and where are they located? I've brought what I thought was local from Amazon only to find it dispatched from Hong Kong so you can be into customs etc.
