Now, depending on what you would consider a "fair" price, your method of determining it may vary, but here's a method I use when looking for a value I can use for buying or trading: select the card and printing (edition) of the card you want to gauge through the search function set the condition, language and other applicable values through the filters if you're a registered member, you'll also get the option to only show sellers from your country
The card can also become a Human as a 5/3 if you want to get really aggressive
CardWizards Your Local & Online Trading Card Shop in Texarkana
Serialized movie poster versions of Edgar Markov can only be found in Innistrad Remastered Collector Boosters
Then the rare instant The Last Agni Kai lets you fight, and you'll also make mana equal to the difference
Commander The Celestial Toymaker Whenever The Celestial Toymaker attacks, look at the top three cards of your library