Bulk Graded Cards
Slabs and player selections in quantities for your stream.
Our Whatnot
Live on
Whatnot.
Every Friday at 2 PM ET.
Sports Card Auctions @ $1 and a Giveaway Every 5 Minutes. Come Join Us!
Shop & Follow on WhatnotNext Friday · 2 PM ET
★★★★★5.0 rating · 5,000+ reviews
Run your own stream?Explore Wholesale Packages
Our main Whatnot account
Friday streams at 2 PM ET6,005-auction record
A Record-Setting Solo Whatnot Stream
6,005Continuous auctions in one stream.One Seller.
20 Hours Live.
John ran 6,005 auctions solo over 20 hours, with the team supporting the operation and fulfillment.
300+Auctions per hour
~12 sec.Between sales, on average
Follow Whatnot for confirmed show times, extra streams, and schedule changes.
For Streamers
Wholesale Packages
for Your Stream.
These packages use the same assortment of cards that helped make our business profitable and keep our customers happy. Our team offers that product mix to other streamers, with options to suit what you run and what your buyers enjoy.
Bulk Sealed Boxes
Sealed boxes for sellers buying in bulk.
Bulk Proof Packs
1/1 proof pack assortments to add to your show’s product mix.
Magged Customs
Custom cards in magnetic holders, with designs and quantities agreed upfront.
Our Consignment Account
Hall of Slabs
Our second Whatnot account, focused on consignment. Shop the streams, or work with our team to sell your cards through Hall of Slabs.
Shop Hall of Slabs17K+Followers
3.5K+Sold
5.0 Rating
Sell with Our Team
Consign with Us.
Interested in having us sell your cards? Send an overview of your inventory. We’ll discuss whether it’s a fit, along with fees, shipping, and the process before you send anything.
Or email your consignment interest directlySelling to JB.CardCollector
Sell Your Cards.
Have a collection, slabs, or a larger lot to sell? Please organize your cards and asking prices in a spreadsheet. Send the spreadsheet link to @JB.CardCollector on Instagram or email it to jb.cardcollector@gmail.com so our team can review it.
Include quantities, condition or grades, and an asking price for each card.
What to Send
1
Your CardsList the cards, quantities, and condition or grades.
2
Your Asking PricesInclude your asking prices in the spreadsheet for individual items.
3
Share Your SpreadsheetMessage the link to @JB.CardCollector on Instagram or send it to jb.cardcollector@gmail.com. Make sure the spreadsheet is viewable so we can open it.
The Person Behind the Business
About Me
I’m John Bredahl. I started JB.CardCollector in 2019 and launched our Whatnot account in 2024. I’ve enjoyed getting to know collectors and other sellers through the business ever since.
I’m studying economics at the University of Michigan and work with a team of 15 to keep our streams, packing, and shipping running smoothly.
Whether you’re joining a stream, buying a wholesale package, or selling cards, we want you to feel comfortable asking questions and know where to reach our team.
$1M+Lifetime sales
100K+Followers across our social media accounts
2019Business founded
Wholesale & Consignment
Tell Us What
You Have in Mind.
Request a wholesale package, ask about consigning with Hall of Slabs, or send a question.
jb.cardcollector@gmail.comSelling cards to us? Send your spreadsheet and asking prices by Instagram or email.