The imminent release of new Mega Evolution—Ascended Heroes tins on August 28, each containing four booster packs from the set, stands as the dominant catalyst pressuring Elite Trainer Box prices downward ahead of the August 31 cutoff. With the expansion already six months into its lifecycle and sealed product holding in the $160–170 range after earlier peaks, traders anticipate this late-summer influx will boost overall supply and divert collector attention toward the more accessible tins at $21.99 MSRP. Historical patterns show similar mid-year restocks often trigger short-term corrections in ETB values as fresh inventory hits shelves. Upcoming chart updates and retailer restocks around month-end could further test momentum, though the set’s strong chase cards continue to anchor baseline demand.