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The ChopArm WeeklyIssue 4August 17, 2026

Adventure on Kami's Island turns strong buy as listings dry up

5 new sealed buy calls, 6 singles, 4 take-profit flags this week. Every call logged and graded, as always.
Boxes tracked
66
Buy-rated
11
Cards scanned
1782
Calls graded
18448
The call of the week
strong buyWatch → Strong Buy this week

Adventure on Kami's Island

One Piece · sealed booster box

It trades at $263 — right at its 1-year high. It's in a steady climb: up 23.2% over 90 days and still rising this week. The tell is supply: active eBay listings are down 37% over 60 days. Fewer sellers into a firm price is the setup this system is built to catch. The cards inside are worth about $6,666, or 25.4× the box price. Read: breaking out above its range.

Affiliate links — ChopArm may earn a commission on qualifying eBay or TCGplayer purchases, at no extra cost to you.
What turned buy
Rating changes between the 2026-08-07 and 2026-08-14 scans. Every one of these was logged the moment it fired and is being graded against what happens next.
Sealed boxes
Adventure on Kami's IslandOne Piecestrong buywas WatchCarrying On His WillOne Piecestrong buywas WatchThe Azure Sea's SevenOne Piecestrong buywas WatchWinterspellLorcanastrong buywas HoldPremium Booster -The Best- Vol. 2One Piecebuywas Hold
Singles desk
New buy ratings
Carrot (021) (Parallel) Two LegendsOne Piecestrong buywas WatchBuff // Buff (Fist Bump Promo) Riftbound Promotional CardsRiftboundstrong buywas WatchDonquixote Doflamingo (SP) 500 Years in the FutureOne Piecestrong buywas WatchFoxy (059) (Parallel) 500 Years in the FutureOne Piecestrong buywas WatchKai'Sa - Daughter of the Void (Overnumbered) OriginsRiftboundstrong buywas WatchMega Venusaur ex - 177/132 ME01: Mega EvolutionPokemonstrong buywas Watch
Take-profit flags
Nico Robin (Parallel) Starter Deck EX: Gear 5One Piecetrimwas HoldDonquixote Rosinante (Alternate Art) Kingdoms of IntrigueOne Piecetrimwas WatchBaloo - Carefree Bear (Enchanted) Whispers in the WellLorcanatrimwas WatchGramma Tala - Spirit of the Ocean (Enchanted) Into the InklandsLorcanatrimwas Watch
Called off
Ratings we pulled this week. Publishing these is the point — a signal service that only prints its winners is marketing, not a track record.
Ursula's ReturnLorcanawatchwas Strong BuyPremium Booster -The Best-One Piecewatchwas Strong BuyTwo LegendsOne Pieceholdwas Buy500 Years in the FutureOne Pieceholdwas Buy
The supply desk
Active eBay listing counts over a 60-day window — the measure almost nobody else publishes. Falling supply into a firm price is the setup; rising supply is the warning.
Drying up
SpiritforgedRiftbound-70.3%supply · price +14.8% 30dOriginsRiftbound-59.4%supply · price -1.6% 30dUnleashedRiftbound-59.2%supply · price +33.6% 30dAdventure on Kami's IslandOne Piece-37.4%supply · price +3.8% 30dThe Time of BattleOne Piece-25.7%supply · price +17.9% 30dParamount WarOne Piece-24.7%supply · price +0.9% 30d
Flooding in
Pitch BlackPokemon+468.1%supply · price -27.7% 30dThe World's Strongest WarriorsOne Piece+306.7%supply · price -17.0% 30dFabledLorcana+94.3%supply · price -11.8% 30d
The week in prices
Seven-day moves across every sealed box on the board.
Up
Down
If you’re ripping something
Highest value-per-dollar box on the board right now, by rip score — how much card value comes out per dollar of box, minus whatever the sealed box itself is still earning.
rip now · 10/10lottery Mid

Reign of Jafar

Lorcana · $132 · 22.1× set÷box
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How the calls are doing
617 graded buy calls. Average next move +1.31%, with 62% up by the following scan. 18448 calls graded in total. See the full ledger →
See every live signal →Past issues
The Weekly is written automatically from ChopArm's own logs the morning it publishes, and archived unchanged — what you are reading is exactly what it said that Monday. Ratings are logged when they fire and graded against what the market does next. Informational only — not financial advice, and not a recommendation to buy or sell anything.