• The Safe & Easy Way to Buy & Sell Collectibles

    Buy from different sellers and get your cards in ONE shipment.

Sale - 45% OFF SRP
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Ends: 1d 13h 14m
dustin42
Port: 1971-2017
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Ends: 3d 15h 34m
$2,000.00 Nashua82
Sale - 63% OFF SRP
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Ends: 0d 22h 14m
troyf1
Port: 2014-2016
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Ends: 3d 14h 19m
$160.00 jl9000
Sale - 45% OFF SRP
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Ends: 1d 21h 14m
bonds0128

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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Flat Rate Shipping

Buy now, ship later! Purchase over time from many sellers & ship once!

15 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.

Buy Baseball Cards Online

We Do The Work To Sell Your Cards

Research & identify your collectibles

Evaluate condition & value

Scan the front & back of every card

Advertise to find buyers

Store & insure consigned collectibles

Resolve customer service needs

Securely package & ship to buyers

We Have Other Unique Services

Mailbox Services

Grading Services

Amazon Integration

Historical Sales Data

Sell Baseball Cards Online

A Different Way to Sell Cards

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

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The Safe and Easy Way to Buy and Sell Cards Online

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2002 Donruss - Diamond Kings Inserts #DK-8

Vladimir Guerrero /2500

$7.25
2003 SP Authentic - [Base] #91

Derek Jeter /2500

$6.25
1968 Topps - [Base] #45

Tom Seaver

$7.75
2013 Topps Allen & Ginter's - People on Bicycles Minis #POB-BR

Brief Respite

$7.24
2012 Bowman Draft Picks & Prospects - Chrome Draft Picks Certified Autographs #BCA-MZ

Mike Zunino

$20.25
2016 Panini Prizm Collegiate Draft Picks - [Base] - Prizms Autographs [Autographed] #178

Draft Picks - DeAndre Washington

$2.74
2012 Fleer Retro - 1997-98 Fleer Metal - Red Precious Metal Gems #M-35

Aaron Rodgers /100

$26.99
2014 Panini Spectra - [Base] #208

Rookie Jersey Autographs - Paul Richardson /149

$5.75
2016-17 Panini Instant NFL - [Base] #524

Ricardo Mathews /112

$10.25
1985 Topps USFL - [Base] #65

Steve Young

$35.25
2005-06 Upper Deck Victory - [Base] #285

Sidney Crosby

$29.05
2015-16 Upper Deck - A Piece of History 1000 Point Club #PC-SL

Steve Larmer

$40.25
2014-15 O-Pee-Chee Platinum - [Base] - Rainbow #194

Johnny Gaudreau

$3.85
2012-13 Upper Deck - [Base] #237

Chris Kreider

$6.25
1997-98 Pacific Dynagon - Tandems #19

Wayne Gretzky, Mark Messier, Brian Leetch

$25.25
2008-09 Topps Treasury - Rookie Refractor Autographs #127

Eric Gordon

$18.00
2012-13 Panini Prizm - [Base] #203

Klay Thompson

$10.99
2015-16 Panini Luxe - Rookie Jerseys #15

Nikola Jokic /99

$20.25
1970-71 Topps - [Base] #112

John Havlicek

$6.23
2014-15 Panini Threads - Freshman Pairs #8

Andrew Wiggins, Zach LaVine /199

$10.25

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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. We don't use stock images; 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.