Table 10 Maximum price to pay on animal welfare eggs (30 eggs) (Unit: won)
| Year | Conventional eggs | Animal welfare eggs | Variation1 |
| 2017 | 7,900 | 10,062 | 2,162 |
| 2018 | 4,000 | 6,433 | 2,433 |
| Variation2 | —3,900 | —3,629 | 271 |
1 Variation (won) = Conventional eggs (won) — Animal welfare eggs (won). 2 Variation (won) = 2018 (won) — 2017 (won).