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Find baseball cards and other sports cards on sale in Promotions & Port Sales

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Build one order over time from multiple sellers, pay shipping once, and receive your cards in one package.

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41 Million Cards Under One Roof

We house millions of sports cards from thousands of sellers and provide industry renowned customer service!

High resolution scans of the front & back of every card.

Easy & Fun Sports Card Flipping

Filter by team, player, set & more. Purchase, instantly relist, & flip for profit.

We Do The Work To Sell Your Cards

Research & identify your collectibles

Evaluate condition & value

Scan the front & back of every card

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Store & insure consigned collectibles

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We identify, scan, list, store, insure, package, and ship - just send us your sports cards, trading cards, and collectibles. COMC listings are automatically posted to eBay!

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1990 Score - [Base] #697

Bo Jackson [PSA 9 MINT]

$92.25

2022 Topps Project 70 - Online Exclusive [Base] #842

1963 Topps Baseball - Mookie Betts by Alex Pardee /4965 [Uncirculated]

$120.00

2015 BBM Nippon Ham Fighters - [Base] #F02

Shohei Ohtani

$22.97

2013 Topps Archives - 1998 Gallery of Heroes #GH-SK

Willie Brown [PSA 4 VG‑EX]

$175.00

2017 Panini Prizm - Stained Glass - Silver Prizm #8

Mike Singletary [PSA 7 NM]

$29.00

2009 Bowman Draft Picks - [Base] - Rookie Autographs #183

Arian Foster

$21.07

2023 Panini Prizm - [Base] - Lazer Prizm #311

Rookies - Bryce Young

$20.67

2021-22 Upper Deck Series 1 - [Base] - Speckled Rainbow Foil #224

Young Guns - Ross Colton

$29.69

2019-20 Upper Deck - Day with the Cup #DC-17

Jaden Schwartz

$58.04

2022-23 Upper Deck Series 2 - [Base] #497

Young Guns - Dylan Guenther

$14.86

2021-22 Upper Deck Series 2 - [Base] #451

Young Guns - Mason McTavish

$17.79

1982-83 Red Rooster Edmonton Oilers - Grocery Store Issue [Base] #99

Wayne Gretzky

$23.42

2018-19 Panini Prizm - Signatures #S-JHD

Jrue Holiday

$19.98

2018-19 Panini Prizm - [Base] #280

Luka Doncic

$102.89

2019-20 Panini NBA Hoops Premium Stock - [Base] - Box Set Pulsar Prizm #296

Hoops Tribute - Zion Williamson [PSA 9 MINT]

$25.54

2022-23 Bowman University Chrome - 2009 Bowman #09B-30

Caitlin Clark

$31.87

2022-23 Panini Select - [Base] - Maroon Prizm Die-Cut #146

Premier Level - Anthony Edwards /175

$20.95

Jump to Popular Players!

Michael Jordan HOF	LeBron James	Auston Matthews	Mike Trout	Wolverine	Shaquille O'Neal
Connor Bedard	Shohei Ohtani	Spider-Man	Zion Williamson	Derek Jeter	Stephen Curry
Connor McDavid	Luka Doncic	Ken Griffey Jr.	Tom Brady	Ja Morant	Patrick Mahomes II
Kobe Bryant	Aaron Judge	Alexis Lafreniere	Ronald Acuna Jr.	Paul Goldschmidt	Wayne Gretzky

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COMC (Check Out My Collectibles) is a unique marketplace for buying and selling sports cards, gaming cards, comics, and more. We have a great selection of singles, memorabilia cards, autographed cards, and rookie cards. Our listings include front and back scans of every card. We're also a great place to sell cards. Do you want to know more about card values? Learn about our suggested prices.