Sports card grading ROI calculator — raw vs. PSA 9 vs. PSA 10 profit analysis with pop report data. Pitched May 27, 2026 · Killed same day after deep competitive sweep.
Sports card collectors spend 30 minutes per card manually researching whether grading is worth it — pulling eBay sold comps for raw vs. PSA 9 vs. PSA 10, looking up PSA population reports, calculating net after grading fees. GradeROI would do all of that in seconds: enter a card, get an instant "grade / skip" recommendation with full profit math.
The first competitive pass looked at the large platforms — CollX, Market Movers, Beckett — and found nothing. The second, deeper pass found a cottage industry of dedicated grading ROI tools that weren't surfacing in broad searches. Lesson: always search for the specific use case, not just the general market.
Nine working competitors. Several are free with Chrome extensions and eBay integration. SlabScore and ProfitSlab in particular are near-exact matches to what was proposed. The core "enter a card, see grading ROI" product is fully solved and free.
To compete here would require a genuinely differentiated angle — possibly mobile-first with AI photo scanning (BankTCG already has that), or focusing purely on Pokemon/TCG pop dynamics (partial gap). As described, the product exists. Kill it.
Initial vetting looked at the major platforms and declared the gap clear. The gap wasn't clear — it was hidden one search layer deeper in a niche tool ecosystem that doesn't show up on "best sports card software" listicles. The lesson: for consumer/hobbyist niches, always search for the specific micro-use-case tool, not the general category. Niche communities build niche tools, and they don't show up on G2 or Product Hunt.