At the time of writing, Charmander is showing a market price of $29.70 USD on TCGPlayer
If the copied creature is a token, Gogo copies the original characteristics of that token as stated by the effect that created the token, with the listed exception
BT14-079 R Digimon Lv.5 Soloogarmon Color Purple Cost 8 DP 8000 Digivolve Cost 1 Purple 3 from Lv.4 Form Ultimate Attribute Virus Type Dark Animal/X Antibody/SoC Card Text 1 [Effect] [When Digivolving] You may play 1 level 3 or lower card with the [Dark Animal] or [SoC] trait from your trash without paying the cost
Hexproof allows a creature to be protected from most spells trying to destroy it, so Kokiri Forest can give a creature a small boost and protection from an opponents spells
This recent addition has lowered the sword to $22, though it is gradually climbing back up
Out: In: Against more aggressive Thalia, Guardian of Thraben decks, you can cut Into the Story for Maddening Cacophony