Cheapest priced copy (Avatar: The Last Airbender): $0.35 at Card Kingdom, near mint, their price list as of .
It'll Quench Ya! 
Instant — Lesson · Common · Avatar: The Last Airbender · #58
Counter target spell unless its controller pays {2}.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Avatar: The Last Airbender | 58 | Common | $0.35 | $0.49 |