Cheapest priced copy (Mirrodin): $0.35 at Card Kingdom, near mint, their price list as of .
Electrostatic Bolt 
Instant · Common · Mirrodin · #89
Electrostatic Bolt deals 2 damage to target creature. If it's an artifact creature, Electrostatic Bolt deals 4 damage to it instead.
Legal inCommanderModernLegacyVintagePauper
Not legal inBrawlStandardPioneer
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirrodin | 89 | Common | $0.35 | $0.49 |