DeeJayOhEh, depends on if you have prime or not, and if you have other orders to go with it to get free shipping. $10 is most certainly cheaper for me (having prime). The silver is also $10 I noticed.
But DeejayOh is correct in that they are all still medium nibs. I'm getting the fine nib, and thus I'm sticking with the drop.
MissNyanCatAnd Staples is selling Silver/Gold/Black at that price.
Medium of course, but Pilot's Medium = Western Fine in case no one has ever used Pilot pens before.