Union Arena most valuable set: Union Arena Promotion Cards at $17,150, tracked by Hoard as of Aug 29, 2026.
| Set | Released | Value | Median | 30d price | Coverage |
|---|---|---|---|---|---|
| Aug 1, 2024 | $17,150 | $2.11 | +2.93% | 95% | |
| Jul 31, 2026 | $8,984 | $0.19 | -2.6% | 97% | |
| Jan 30, 2026 | $6,983 | $0.21 | -2.05% | 100% | |
| Jan 30, 2026 | $5,563 | $0.20 | +6.51% | 100% | |
| Jun 26, 2026 | $4,798 | $0.31 | +0.51% | 100% | |
| Apr 24, 2026 | $4,418 | $0.23 | +0.96% | 100% | |
| Aug 14, 2026 | $4,215 | $0.27 | — | 91% | |
| Nov 28, 2025 | $3,852 | $0.22 | +7.6% | 100% | |
| May 2, 2025 | $3,732 | $0.21 | +8.92% | 100% | |
| May 30, 2025 | $3,540 | $0.19 | +8.78% | 100% | |
| May 29, 2026 | $3,331 | $0.19 | -3.15% | 100% | |
| Jul 10, 2026 | $3,294 | $0.33 | -3.64% | 92% | |
| Feb 27, 2026 | $3,286 | $0.20 | +16.93% | 90% | |
| Mar 20, 2026 | $3,252 | $0.24 | +0.7% | 97% | |
| Dec 12, 2025 | $3,212 | $0.12 | +20.21% | 100% | |
| Oct 31, 2025 | $2,740 | $0.24 | +8.09% | 100% | |
| Jan 24, 2025 | $2,441 | $0.26 | +1.2% | 100% | |
| Oct 4, 2024 | $2,283 | $0.20 | +7.63% | 100% | |
| Jul 25, 2025 | $2,252 | $0.20 | +10.3% | 100% | |
| Sep 26, 2025 | $1,969 | $0.19 | +4.78% | 100% | |
| Dec 13, 2024 | $1,869 | $0.19 | +9.02% | 100% | |
| Oct 4, 2024 | $1,462 | $0.17 | -0.07% | 100% | |
| Jun 27, 2025 | $1,435 | $0.21 | +10.2% | 100% | |
| Oct 31, 2025 | $1,384 | $0.13 | +4.08% | 99% | |
| Mar 7, 2025 | $1,309 | $0.21 | +20.09% | 100% |
Hoard's own daily rollups of live TCGplayer market pricing across every tracked Union Arena product — not scraped or modeled from someone else's listings.
The sets with the largest 7-day percentage change in their price index, up or down — ranked by the set's overall index, not any single card's price. A set needs at least two dated readings inside that window, and a real price above a few cents, to qualify — brand-new, thinly tracked, or bulk sets are excluded so a rounding-level move doesn't read as a market swing.
Sets ranked by total market value: the sum of the current market price across every tracked product in the set, not any single card's price.
Once a day, alongside Hoard's overnight market rollup. The "as of" date on the page shows the last update.
Priced and tracked with Hoard. Docs · Connect via MCP
These prices come from the same TCGplayer feed Hoard uses to reprice seller inventory. If you run a store, read how TCGplayer repricing works, see what Hoard pricing costs, compare the main TCGplayer alternatives, or read Hoard against BinderPOS and how to migrate from BinderPOS.