Machop and Machoke are both supposed to be grey, and Machamp is supposed to be blueish-grey
What makes this card a strong long-term hold is that N's popularity is not tied to a trend
Like most Magic: The Gathering cards, the value of Exsanguinate 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 (Foundations)
Its a good way to be able to pay for things like Jazal Goldmanes ability, as long as you have some spare White mana sitting around
If you want a clean card but prefer not to spend over $100, you can settle for an LP copy, which should cost you closer to $62.99, while a damaged copy will only run you about $15 if the condition doesn't matter.