Silver Eagle Higher Than Spot?

DEpending on grade and date this is how value is determined not merely by bullion spot price alone and beond that any collectable is worth what a person can get out of it not what it says in a book or an ad

A Silver Eagle is not "just bullion" it is a coin and such has at least some numismatic value. In the most basic form, the bullion strikes ( no mint mark, like the coin in your example), the SAE is worth spot price plus what it cost to mint, that cost essentially being the price we pay to get the guarantee that the coin is .999 fine silver and backed by the US government and to provide a little profit to the people who have to buy them from the mint in million dollar quantities. Other incarnations of the SAE, the proof, uncirculated, and 2006 reverse proof are collector pieces from the start. They are struck on specially prepared planchets at higher forces and in the proof cases they are struck at least twice. They are then given special, individual handling and packaging before being sold, All of this increases both their value and price. A percentage of all types of SAEs are considered perfect by third party graders and those coins fetch a significant premium in the market place, again depending on mintage (which translates in some way to the more important "availability"), percentage of MS/PR70s, grader (an ANACS MS70 won't get as much as a PCGS MS70), and a few other factors.