Cheapest priced copy (Marvel Super Heroes Commander): $0.35 at Card Kingdom, near mint, their price list as of .
Extremis Elite 
Creature — Human Mercenary Villain · 2/2 · Common · Marvel Super Heroes Commander · #763
Power-up — {4}{R}: Put two +1/+1 counters on this creature. It deals 1 damage to any target. (Activate each power-up ability only once. Reduce the cost by its mana cost if it entered this turn.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes Commander | 763 | Common | $0.35 | $0.49 |