Cheapest priced copy (Throne of Eldraine): $0.35 at Card Kingdom, near mint, their price list as of .
Insatiable Appetite 
Instant · Common · Throne of Eldraine · #162
You may sacrifice a Food. If you do, target creature gets +5/+5 until end of turn. Otherwise, that creature gets +3/+3 until end of turn.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
2 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Throne of Eldraine | 162 | Common | $0.35 | $0.49 |
| Foundations Jumpstart | 672 | Common | $0.35 | — |
3 rulings from Wizards of the Coast
- 4 October 2019If the target creature is an illegal target by the time Insatiable Appetite tries to resolve, the spell won't resolve. You won't sacrifice a Food.
- 4 October 2019You choose a target creature as you cast Insatiable Appetite, but you don't choose whether to sacrifice a Food until the spell resolves.
- 8 November 2024If an effect refers to a Food, it means any Food artifact, not just a Food artifact token. For example, you can sacrifice Tough Cookie (an Artifact Creature — Food Golem) to activate Maraleaf Rider's ability (an ability with "Sacrifice a Food" in its cost).