**Phantasmal Flames booster boxes currently trade around $390–400, buoyed by sustained demand for the set’s dominant chase—the Mega Charizard X ex Special Illustration Rare, which holds the majority of the set’s singles value.** This post-release strength, unusual for a smaller November 2025 expansion, has kept sealed product elevated nine months out despite an initial correction after launch. The near-even 51% “Up” odds reflect a balance between this Charizard-fueled collector interest and countervailing pressures: recent modest softening in some tracked prices, the approach of high-profile September releases including the 30th Celebration set on the 16th and the anticipated Storm Emerald expansion, and typical post-summer supply dynamics. Traders are weighing whether the Mega Evolution era’s momentum and specific chase-card scarcity can push prices higher before new product waves and anniversary hype potentially redirect capital. Key swing factors through late September include any fresh restocks, updated singles sales data, or early 30th Celebration preorder strength.