Cheapest priced copy (The Brothers' War Retro Artifacts): $0.35 at Card Kingdom, near mint, their price list as of .
Bone Saw 
Artifact — Equipment · Common · The List · #OGW-161
Equipped creature gets +1/+0.
Equip {1} ({1}: Attach to target creature you control. Equip only as a sorcery.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
6 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| The Brothers' War Retro Artifacts | 7 | Uncommon | $0.35 | $0.49 |
| The Brothers' War Retro Artifacts | 70 | Uncommon | $0.35 | $0.49 |
| The Brothers' War Retro Artifacts | 70z | Uncommon | — | — |
| Conflux | 135 | Common | $0.35 | $0.49 |
| Oath of the Gatewatch | 161 | Common | $0.35 | $0.49 |
| The List | OGW-161 | Common | $0.35 | — |