Cheapest priced copy (Tenth Edition): $0.35 at Card Kingdom, near mint, their price list as of .
Highway Robber 
Creature — Human Mercenary · 2/2 · Common · Ninth Edition · #138
When this creature enters, target opponent loses 2 life and you gain 2 life.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
5 printings · $0.35 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Tenth Edition | 150 | Common | $0.35 | $0.49 |
| Ninth Edition | 138 | Common | $0.35 | — |
| Ninth Edition | 138★ | Common | — | $0.49 |
| Duel Decks: Jace vs. Vraska | 61 | Common | $0.35 | — |
| Mercadian Masques | 139 | Common | $0.35 | $2.49 |