PRB-01
In stock · verified
[PRB-01] The Best Booster Box
Trusted online retailer
$119.99$6.00 per pack12% below market
ONE PIECE TCG · STOCK + PRICE INTELLIGENCE
Track sealed.
Follow singles.
Buy with context: Grand Line Monitor brings verified boxes and packs, the English singles market, price history, watchlists, and alerts into one collector-focused app.
Verified online stock
TCGplayer market history
3 free email alerts
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A verified box hit your priceKnow the retailer, market discount, and exact page to open
Verified availabilityExact product pages are rechecked before stock is treated as orderable.
Prices in contextUse sealed comparisons, singles history, box-value models, and live seller offers.
Alerts you controlFree Crew includes three email alerts; Captain adds unlimited Discord-capable strategies.
RETAILER COVERAGE
Major retailers and trusted card shops, together.
Search one normalized feed instead of opening the same store tabs all day. Every result still sends you to the retailer to complete checkout.
MAJOR RETAILERS
Broad retail drops
Marketplace and national-retailer inventory for packs, boxes, and upcoming releases.
- eBay
- Walmart
- Target
- Barnes & Noble
- Five Below
ONLINE LGS
Specialist card-shop coverage
Representative stores from the wider network of online game and card shops we monitor.
- Gamers Guild AZ
- Zulu’s Games
- Smoke and Mirrors Hobby
- Miniature Market
- CoreTCG
- The Game Capital
- Collector Store
- Double Infinity Gaming
- +48 moreonline LGS
Retailer support and availability can change. Grand Line Monitor continuously audits sources and only presents listings that pass its current online-ordering checks.
THREE SIMPLE STEPS
From market research to the exact listing.
Grand Line Monitor does the repetitive checking and organizing. You decide what deserves your money.
Explore sealed or singles
Browse English boxes, packs, and cards by set, treatment, retailer, availability, price, and market movement.
Decide with context
Compare verified listings with TCGplayer data, inspect interactive price history, and study each box’s chase cards and modeled opening values.
Watch it or set an alert
Follow cards and boxes in your Watchlist, or receive a precise email or Discord alert when your buying conditions are met.
BUILT FOR ONE PIECE COLLECTORS
Two markets. One watchlist. Better decisions.
Sealed and Singles each get a focused experience, while your Watchlist keeps every collecting goal together.
SEALED
Boxes and packs
Find verified stock, compare box prices, and open a set detail when you want the full story.
- Major retailers and online LGS
- Market discounts and price history
- Top chase-card gallery
- Modeled average, lucky, and extreme values
SINGLES
Cards and live offers
Browse the English card catalog, inspect the exact variant, and choose a smarter target price.
- Booster, starter-deck, and promo cards
- Interactive 1M, 3M, 6M, and 1Y history
- TCGplayer market or lowest-listed price
- Live eBay, Cardmarket, and retailer offers
WATCHLIST
Your collection goals
Follow singles and booster boxes without turning every item into a notification.
- Personal card and box watchlists
- Interactive price charts
- Optional target-price alerts
- Fast paths back to each detail view
CAPTAIN · GRAND LINE INTEL
Your market, summarized every day.
Grand Line Intel turns price moves, upcoming releases, and your personal Watchlist into a daily briefing. Captain alerts also keep following listings after the first hit through price changes, release, removal, and sellout.
Explore Captain →Daily Intel readyThe moves that matter to you
Watchlist price changedA followed card moved sharply
Upcoming release gaining attentionNew set and preorder context
Verified listing sold outLifecycle follow-up on an alert you received
START FREE. UPGRADE WHEN IT EARNS ITS KEEP.
Three focused alerts are free.
Every account gets the complete Sealed, Singles, and Watchlist experience. Captain is for collectors who want unlimited strategies, Discord, lifecycle tracking, and daily Intel.
$0
Track a few priorities without losing the full product.
- Complete Sealed and Singles access
- Personal cards-and-boxes Watchlist
- Price history and live seller listings
- Three active email alerts
- New listing, restock, preorder, or target-price notifications
$2.99 / month
Turn a larger hunt list into a daily, always-on system.
- Everything in Free Crew
- Grand Line Intel personalized daily briefing
- Unlimited sealed and singles alerts
- Choose Email or Discord per alert
- Separate set, retailer, format, and price strategies
- TCGplayer discount thresholds
- Price, release, removal, and sellout follow-ups
- Paid Discord community roles can unlock Captain
READY TO SET SAIL?
Follow the market without living in store tabs.
Create a free account, build your Watchlist, and choose your first three email alerts.