Sealed Tracker: A portfolio app treats sealed booster boxes and ETBs like stocks, charting value over time with buy-in alerts and hold-vs-sell suggestions.

Track 200 popular sealed products with daily price pulls and let users log their purchases to see unrealized gains.

Why it can work: Sealed product behaves like an asset class with buyers who track prices in spreadsheets; a purpose-built portfolio app replaces those spreadsheets cleanly.