Others have slightly higher card prices but cheaper shipping
Like most Magic: The Gathering cards, the value of Fang, Fearless l'Cie depends on a few consistent factors: its rarity, the printing and finish (regular or foil), its physical condition, and the set it was printed in (Final Fantasy)
The nice thing about Jarad is that sacrificing the Cactuar is part of the cost, so theres not much your opponents can do at that point other than counter the ability
Youre paying a bit of a premium for its versatility, but when each mode is good its worth using
If it turns out that your opponents were, in fact, not playing islands, you can still always cast Mogg Salvage for 3 mana
Whoever is in the lead on lands is still going to be able to stay ahead if they can keep hitting land drops as well