Verdant: Of the bright green color of lush grass.

Verdant Vortex Bottle Cap

https://backpack.tf/profiles/76561198101829283#!/compare/1580688000/1580860800

https://backpack.tf/profiles/76561198137740123#!/compare/1578528000/1580860800

Untraceable

https://backpack.tf/profiles/76561198251805358#!/compare/1579132800/1579219200

https://backpack.tf/profiles/76561198363395191#!/compare/1579132800/1579219200

Untrace

Marketplace salsa:

https://marketplace.tf/items/tf2/31042;5;u132

1. Sold for $34 / $1.78 = 19.10 keys ~ 19

2. Sold for $26 / $1.77 = 14.69 keys ~ 15

3. Sold for $26.95 / $1.78 = 15.14 keys ~15

4. Sold for $49.99 / $1.70 = 29.41 keys (higher than current seller's price)

15 keys sale is quite low and close to current marketplace b/o, possibly those were sold to b/o too, so excluding them. Pricing this at 19 keys.