Union Arena SAKAMOTO DAYS booster display$94today

Is a SAKAMOTO DAYS booster display worth opening?

Union Arena. 16 packs of 12 cards. Released 29 May 2026. Prices from 15 October 2026.

TCGplayer today

$93.77

Lowest listing
$119.99
Per pack
$5.86

Toss-up$119 of cards inside, after selling costs

Estimated contents: nobody has published measured pull rates for this box yet, so we use those of boxes with the same pack layout. Treat the numbers as a rough guide.

See the mathPrice history

Why it's a toss-up

The cards inside are worth $119 after selling costs. The box costs $94.

But 71 of 100 boxes lose money. A few big pulls carry the average.

Pull rates are still uncertain. The real value could be anywhere from $69 to $224. That's enough to change the verdict.

If you opened 100 boxes

  • 29 make money
  • 71 lose money

A typical box is worth $50. 1 in 10 boxes is worth $331 or more, and 1 in 10 is worth $26 or less.

The math, per box

From the price of every card to what you'd actually keep.

Per box of 16 packs

Box price on TCGplayer
$94
Cards inside, at market prices
$167
Selling costs and bulk
−$48
Cards inside, after selling costs
$119
Compared with the box price
+$25

From 100,000 simulated boxes. Selling costs: 13% fee, $0.30 per card sold, cards under $1.00 go to bulk at $0.01.

Cards inside, at market prices
The average value of everything in a box, with each card at its price on TCGplayer today.
Selling costs and bulk
TCGplayer's fee and postage for every card worth selling. Cheap cards go to bulk for a few cents.
Cards inside, after selling costs
What an average box puts in your pocket once everything is sold.
Compared with the box price
Plus means the average box is worth more than it costs. Minus means it's worth less.

What the box costs

Today's price on TCGplayer, and how the box price and the cards inside have moved.

TCGplayer today
$93.77$5.86 per pack
Lowest listing
$119.99
  • Box price on TCGplayer
  • Cards inside, after selling costs
Box price and the cards inside, day by dayFrom 14 Oct to 15 Oct, the box price went from $94 to $94, and the cards inside, after selling costs, from $119 to $119.$90$100$110$120$130Box$94Cards$11914 Oct15 Oct14 Oct: box $94, cards $11915 Oct: box $94, cards $119Box price and the cards inside, day by dayFrom 14 Oct to 15 Oct, the box price went from $94 to $94, and the cards inside, after selling costs, from $119 to $119.$90$100$110$120$130Box$94Cards$11914 Oct15 Oct14 Oct: box $94, cards $11915 Oct: box $94, cards $119
On days when the cards line sits above the box line, an average box was worth more than it cost. Selling costs use our defaults.
Show as a table
DayBox priceCards inside, after costs
15 October 2026$93.77$119.08
14 October 2026$93.77$119.08

What 100,000 simulated boxes were worth

Every box is different. This is how the value of each simulated box came out, after selling costs.

Value of 100,000 simulated boxes71 of every 100 simulated boxes were worth less than the box price of $94.Box price $94Lose moneyMake money010203040$100$200$300$400$500$554+Boxes out of 100Under $34: 22 of 100 boxes$34 to $54: 33 of 100 boxes$54 to $74: 14 of 100 boxes$74 to $94: 2 of 100 boxes$94 to $114: 1 in 541 boxes$114 to $134: 1 in 4,348 boxes$134 to $154: 1 in 92 boxes$154 to $174: 2 of 100 boxes$174 to $194: 1 in 109 boxes$194 to $214: 1 in 474 boxes$214 to $234: 1 in 73 boxes$234 to $254: 3 of 100 boxes$254 to $274: 4 of 100 boxes$274 to $294: 3 of 100 boxes$294 to $314: 1 in 102 boxes$314 to $334: 3 of 100 boxes$334 to $354: 4 of 100 boxes$354 to $374: 2 of 100 boxes$374 to $394: 1 in 217 boxes$394 to $414: 1 in 510 boxes$414 to $434: 1 in 893 boxes$434 to $454: 1 in 441 boxes$454 to $474: 1 in 224 boxes$474 to $494: 1 in 297 boxes$494 to $514: 1 in 442 boxes$514 to $534: 1 in 435 boxes$534 to $554: 1 in 344 boxes$554 or more: 2 of 100 boxesValue of 100,000 simulated boxes71 of every 100 simulated boxes were worth less than the box price of $94.Box price $94Make money010203040$200$400$554+Boxes out of 100Under $34: 22 of 100 boxes$34 to $54: 33 of 100 boxes$54 to $74: 14 of 100 boxes$74 to $94: 2 of 100 boxes$94 to $114: 1 in 541 boxes$114 to $134: 1 in 4,348 boxes$134 to $154: 1 in 92 boxes$154 to $174: 2 of 100 boxes$174 to $194: 1 in 109 boxes$194 to $214: 1 in 474 boxes$214 to $234: 1 in 73 boxes$234 to $254: 3 of 100 boxes$254 to $274: 4 of 100 boxes$274 to $294: 3 of 100 boxes$294 to $314: 1 in 102 boxes$314 to $334: 3 of 100 boxes$334 to $354: 4 of 100 boxes$354 to $374: 2 of 100 boxes$374 to $394: 1 in 217 boxes$394 to $414: 1 in 510 boxes$414 to $434: 1 in 893 boxes$434 to $454: 1 in 441 boxes$454 to $474: 1 in 224 boxes$474 to $494: 1 in 297 boxes$494 to $514: 1 in 442 boxes$514 to $534: 1 in 435 boxes$534 to $554: 1 in 344 boxes$554 or more: 2 of 100 boxes
Each bar covers $20 of box value. Bars right of the line are boxes worth at least what you paid.
Show as a table
Box valueBoxes out of 100Result
Under $3422 of 100Lose money
$34 to $5433 of 100Lose money
$54 to $7414 of 100Lose money
$74 to $942 of 100Lose money
$94 to $1141 in 541Make money
$114 to $1341 in 4,348Make money
$134 to $1541 in 92Make money
$154 to $1742 of 100Make money
$174 to $1941 in 109Make money
$194 to $2141 in 474Make money
$214 to $2341 in 73Make money
$234 to $2543 of 100Make money
$254 to $2744 of 100Make money
$274 to $2943 of 100Make money
$294 to $3141 in 102Make money
$314 to $3343 of 100Make money
$334 to $3544 of 100Make money
$354 to $3742 of 100Make money
$374 to $3941 in 217Make money
$394 to $4141 in 510Make money
$414 to $4341 in 893Make money
$434 to $4541 in 441Make money
$454 to $4741 in 224Make money
$474 to $4941 in 297Make money
$494 to $5141 in 442Make money
$514 to $5341 in 435Make money
$534 to $5541 in 344Make money
$554 or more2 of 100Make money

Where the value comes from

The average box, split by card type. Most of the value often sits in cards you'll rarely see.

Card typeHow many per boxAverage card after selling costsAdds to the box
Alt-art parallel (★ / ★★)1.1 per box1.1 per box$77.42$81
Super Rare6.0 per box6.0 per box$3.94$24
Common / Uncommon176 per box176 per box$0.08$14
Rare8.9 per box8.9 per box$0.01$0.09
Total$119

Chance of a big pull

How often a box has at least one of the rarest cards.

Show as a table
Card typeBoxes with at least oneOn averageBoxes for one specific card
Alt-art parallel (★ / ★★)Star-marked alternate-art versions of the set's cards, about one per box.66 of 1001.1 per box18

If card prices fall

Prices often drop in the weeks after a set comes out. This is the same box with cheaper cards and the same box price.

Card pricesCards inside, after costsCompared with the boxBoxes that lose moneyVerdict
Today's prices$119+$2571 of 100Toss-up
25% lower$86−$872 of 100Toss-up
50% lower$57−$3775 of 100Keep it sealed
75% lower$27−$6796 of 100Keep it sealed

Pull rates we used

Where each number comes from, and how sure we are. Sources checked on 14 October 2026. This box's own pull rates haven't been measured, so these come from boxes with the same pack layout, with extra uncertainty added.

Card typeHow oftenLikely rangeBased on
Common slots, 11 per pack
Common / Uncommon176 per boxPack layout
Rare-or-better slots, 1 per pack
Alt-art parallel (★ / ★★)1.1 per box1 in 2.2 boxes to 2.4 per boxEstimate, TCGTalk, Inuyasha (UE23BT) Union Arena guide: pull rates from 3 English boxes (48 packs)
Super Rare6.0 per box3.6 to 10.0 per boxEstimate, TCGTalk, Inuyasha (UE23BT) Union Arena guide: pull rates from 3 English boxes (48 packs)
Rare8.9 per boxThe rest of the slot

Most valuable cards

The 30 most valuable cards in the set, and what you'd keep after selling one.

CardCard typeTCGplayer priceAfter selling costs
Taro Sakamoto (026) (SR**)Alt-art parallel (★ / ★★)$351.00$305.07
Osaragi (046) (SR**)Alt-art parallel (★ / ★★)$341.25$296.59
Heisuke Mashimo (008) (SR**)Alt-art parallel (★ / ★★)$275.51$239.39
Shishiba (055) (SR**)Alt-art parallel (★ / ★★)$257.25$223.51
Lu Shaotang (031) (SR**)Alt-art parallel (★ / ★★)$229.52$199.38
Shin Asakura (018) (SR**)Alt-art parallel (★ / ★★)$142.46$123.64
Shin Asakura (017) (SR*)Alt-art parallel (★ / ★★)$18.00$15.36
Taro Sakamoto (026)Super Rare$17.32$14.77
Osaragi (044) (U*)Alt-art parallel (★ / ★★)$15.88$13.52
Lu Shaotang (030) (R*)Alt-art parallel (★ / ★★)$12.44$10.52
Taro Sakamoto (051) (SR*)Alt-art parallel (★ / ★★)$10.01$8.41
Nagumo (061) (SR*)Alt-art parallel (★ / ★★)$9.98$8.38
Osaragi (046)Super Rare$9.17$7.68
Shin Asakura (017)Super Rare$8.97$7.50
Heisuke Mashimo (008)Super Rare$8.58$7.16
Osaragi (045) (R*)Alt-art parallel (★ / ★★)$7.90$6.57
Shishiba (054) (R*)Alt-art parallel (★ / ★★)$5.78$4.73
Natsuki Seba (069) (SR*)Alt-art parallel (★ / ★★)$5.37$4.37
Takamura (056) (R*)Alt-art parallel (★ / ★★)$4.35$3.48
Nagumo (060) (R*)Alt-art parallel (★ / ★★)$4.33$3.47
Shin Asakura (016) (R*)Alt-art parallel (★ / ★★)$3.24$2.52
Shishiba (055)Super Rare$2.15$1.57
Heisuke Mashimo (Box Topper Foil)Common / Uncommon$2.11$1.54
Osaragi (Box Topper Foil)Common / Uncommon$2.11$1.54
Nagumo (012) (R*)Alt-art parallel (★ / ★★)$1.81$1.27
Heisuke Mashimo (007) (R*)Alt-art parallel (★ / ★★)$1.22$0.76
Taro Sakamoto (Box Topper Foil)Common / Uncommon$1.15$0.70
Taro Sakamoto (051)Super Rare$1.11$0.67
Natsuki Seba (Box Topper Foil)Common / Uncommon$1.09$0.65
Nagumo (061)Super Rare$0.88$0.01

How we work this out

We price every card at its TCGplayer market value, take off the selling costs above, and open 100,000 virtual boxes slot by slot using the pull rates in the table. The verdict compares the cards with the box price and checks how often a box loses money.

Read the full method