The Celebrations Ultra Premium Collection, the 2021 sealed product celebrating Pokémon’s 25th anniversary, has seen its secondary-market price climb sharply into the $1,200–$1,300 range amid ongoing nostalgia demand and limited remaining sealed supply. Trader consensus heavily favors a decline by August 31 because recent spikes appear unsustainable heading into the final weeks of summer, with no major new catalyst expected before the November 6 launch of the 30th-anniversary Ultra Premium Collections that could siphon collector attention and capital. Historical patterns in the TCG sealed market show similar premium boxes often correct after short-term rallies once hype cycles cool and listings normalize. While an unexpected surge in late-August social-media buzz or a sudden buyout of remaining stock could theoretically produce a brief rebound, the overwhelming market-implied odds reflect how little room remains for positive surprises in the narrow window before the end-of-month resolution.