Doubling Season (Foundations 438/771) — market price $663.52, unchanged this week. Weekly price history, its performance against the rest of the set, and today's prices at each marketplace. Prices are market estimates, not investment advice.
| Week | Price |
|---|---|
| 2026-W40 | $663.52 |
| 2026-W39 | $663.52 |
| 2026-W38 | $663.52 |
| 2026-W37 | $635.08 |
| 2026-W36 | $635.08 |
| 2026-W35 | $635.08 |
| 2026-W34 | $635.08 |
| 2026-W33 | $635.08 |
| 2026-W32 | $624.11 |
| 2026-W31 | $624.00 |