Cheapest priced copy (Betrayers of Kamigawa): $0.35 at Card Kingdom, near mint, their price list as of .
Scour 
Instant · Uncommon · Betrayers of Kamigawa · #20
Exile target enchantment. Search its controller's graveyard, hand, and library for all cards with the same name as that enchantment and exile them. Then that player shuffles.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
2 printings · $0.35 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Betrayers of Kamigawa | 20 | Uncommon | $0.35 | $0.79 |
| Urza's Destiny | 18 | Uncommon | $0.59 | $11.99 |
3 rulings from Wizards of the Coast
- 4 October 2004Does not exile other cards of the same name that are on the battlefield. Just from the graveyard, hand, and library.
- 1 February 2005Scour can target and exile cards that aren’t always enchantments, but are enchantments when Scour is cast and resolves (such as creatures turned into enchantments by Soul Sculptor). Scour’s exile effect only looks for cards by name, not type.
- 1 February 2005The copies must be found if they are in publicly viewable zones. Finding copies while searching private zones is optional.