Flesh and Blood Mastery Pack: Guardian vs High Seas booster box: which is worth opening?
High Seas is the better box to open: its cards are worth 191% of its price after selling costs, against 174% for Mastery Pack: Guardian.
Side by side
| Mastery Pack: Guardian booster box | High Seas booster box | |
|---|---|---|
| Verdict | Rip it | Toss-up |
| Box price today | $65€58 | $90€80 |
| Cards inside, after selling costs | $112€100 | $171€153 |
| Cards ÷ price | 174% | 191% |
| Boxes that lose money | 36 of 100 boxes | 69 of 100 boxes |
| A typical box (median) | $76€68 | $57€51 |
| Rarest pull | Marvel: 6 of 100 boxes | Fabled: 2 of 100 boxes |
| Packs | 12 packs of 13 cards | 24 packs of 16 cards |
| Released | August 8, 2025 | June 6, 2025 |
The two boxes
How we work this out
Both boxes are worked out the same way: today's card prices, selling costs taken off, and simulated boxes to see how often one loses money. Read the full method