Surging Sparks’s regular retail Elite Trainer Box is priced at $130, sitting at 84% of its tracked 90-day range. eBay active listings have moved +6.0% over the tracked supply window (artifact-filtered, median-to-median). It trades at 2.6× its $49.99 retail price. Against the ETB market’s median 30-day move of -2.1%, it is running +7.0% ahead (+1 to score).
Context & evidence · data confidence A: 105 price reads over 137 days · 15 supply reads · volatility measured · volatility tier Jumpy. ETB signals run the full sealed stack (upgraded 2026-07-10): supply+price core, NEW maturity gate, market-relative strength, and retail-price anchor. The set÷box ratio and Rip Score stay excluded — they don’t translate to a 9-pack product. Every run is logged to the ETB Signal Log so the backtest can grade these dials.
Price history
eBay supply
