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

Ideal for Set Builders & Player Collectors

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

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43 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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Shop Recently Added

2009 Upper Deck A Piece of History - A Piece of Hollywood #POH-RM

Slip "The Notebook" (Rachel McAdams)

$23.54

2023 Topps Museum Collection - Single-Player Signature Swatches Triple Relic Autographs #SWTRA-TC

Triston Casas /399

$31.99

2023 Topps Series 1 1st Edition - [Base] #250

Adley Rutschman

$3.43

1997 Topps Gallery - Peter Max #PM1

Derek Jeter

$91.09

2013 Bowman Draft Picks & Prospects - Draft Picks #BDPP19

Aaron Judge

$85.63

2019 Panini Contenders Draft Picks - [Base] #243

College Ticket - Terry McLaurin

$29.00

2015 Panini Contenders - [Base] #160

Rookie Ticket - Taylor Heinicke

$13.19

2017 Upper Deck USA Football - USA U17 Dual Autos #DA-16

Tyler Van Dyke, Cooper Beebe

$32.74

2018 Panini Donruss - Rookie Threads - Green #17

Lamar Jackson

$39.35

2019 Panini Contenders Optic - [Base] #176

Holo Prizm Rookie Ticket Autographs - Rashan Gary

$30.14

2005-06 Parkhurst - [Base] #600

Season Highlights - Alexander Ovechkin

$40.44

2017-18 Upper Deck - [Base] #464

Young Guns - Martin Necas

$35.04

2024 Upper Deck PWHL 1st Edition - [Base] - Deluxe #70

Mario Lemieux [PSA 8 NM‑MT]

$140.90

2023-24 Skybox Metal Universe - [Base] - Precious Metal Gems Red #170

Rookies - John Beecher /100

$29.29

2021-22 Panini Prizm - [Base] - Fast Break Blue Prizm #320

Scottie Barnes /150

$174.99

1999-00 Upper Deck - Michael Jordan A Higher Power #MJ6

Jerry Sichting [PSA 8 NM‑MT]

$32.44

1993-94 Topps Stadium Club - [Base] - 1st Day Issue #196

League Leaders - Lew Alcindor, Jerry West, Elvin Hayes [Good to VG…

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Jump to Popular Players!

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