Get smarter at every part of the hobby.
Short, practical, data-backed. Whether you're sending your first card to PSA or running a Whatnot stream, the answer is in here.
How to photograph your cards for Gemmr
A data-backed field guide. 64% of rejected scans fail for one reason, and it's not what you'd think. Here's how to fix it.
Read guideShould you grade your card? A flowchart for raw-card owners
A decision tree for the only question that matters: is sending this card to PSA worth $25 and six months? With the math shown.
Read guidePSA vs BGS vs CGC vs SGC vs TAG: which grading service to choose
Head-to-head on turnaround, cost, resale premium, and grading scale. From a tool that grades across all five and watches what they each return.
Read guideThe 4 sub-grades explained: centering, corners, edges, surface
The four pillars every grading service uses. What separates a 10 from a 9 on each axis, with diagrams of what graders are actually looking for.
Read guideCard grading scales decoded: from PSA's 1-10 to TAG's 1000
A translation chart across PSA, BGS, CGC, SGC, and TAG. Why a BGS 9.5 is not a PSA 9.5, and what qualifiers like OC, MK, and MC actually mean.
Read guideBuilding a TCG portfolio: a beginner's investing framework
Position sizing, modern vs vintage allocation, sealed vs singles, exit strategies. Treating cards as an asset class without getting cute about it.
Read guideTax basics for card collectors and flippers
Hobby vs business income, the 1099-K threshold, cost basis tracking, capital gains. A starting point for anyone selling more than a few cards a year.
Read guideSelling cards on Whatnot: a first-streamer's playbook
Verification, stream formats, fee math, shipping logistics, and how to actually price a card mid-stream without bleeding margin.
Read guidePricing cards for resale: the 70% rule and other heuristics
How to back into a price from comps when you need a number in five seconds. Fee math, condition adjustments, and the most common margin mistakes.
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