diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index 90f53d6a95e..6d56d84d035 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -37,6 +37,7 @@ import {
   PokemonHpRestoreModifier,
   PokemonIncrementingStatModifier,
   RememberMoveModifier,
+  ShinyRateBoosterModifier,
 } from "./modifier/modifier";
 import { PokeballType } from "#enums/pokeball";
 import {
@@ -184,6 +185,7 @@ import { HideAbilityPhase } from "#app/phases/hide-ability-phase";
 import { expSpriteKeys } from "./sprites/sprite-keys";
 import { hasExpSprite } from "./sprites/sprite-utils";
 import { timedEventManager } from "./global-event-manager";
+import { BASE_SHINY_CHANCE } from "./data/balance/rates";
 
 export const bypassLogin = import.meta.env.VITE_BYPASS_LOGIN === "1";
 
@@ -1295,6 +1297,17 @@ export default class BattleScene extends SceneBase {
     }
   }
 
+  /**
+   * Applies Shiny Charms and other modifiers to check the general shiny rate
+   * @returns The chance out of 65536 to get a shiny
+   */
+  getModifiedShinyThreshold(): number {
+    const threshold = new NumberHolder(BASE_SHINY_CHANCE);
+    this.applyModifiers(ShinyRateBoosterModifier, true, threshold);
+    threshold.value *= timedEventManager.getShinyMultiplier();
+    return threshold.value;
+  }
+
   getDoubleBattleChance(newWaveIndex: number, playerField: PlayerPokemon[]) {
     const doubleChance = new NumberHolder(newWaveIndex % 10 === 0 ? 32 : 8);
     this.applyModifiers(DoubleBattleChanceBoosterModifier, true, doubleChance);
diff --git a/src/data/mystery-encounters/encounters/the-pokemon-salesman-encounter.ts b/src/data/mystery-encounters/encounters/the-pokemon-salesman-encounter.ts
index 31a6df7046f..7f016ef132a 100644
--- a/src/data/mystery-encounters/encounters/the-pokemon-salesman-encounter.ts
+++ b/src/data/mystery-encounters/encounters/the-pokemon-salesman-encounter.ts
@@ -39,8 +39,8 @@ const MAX_POKEMON_PRICE_MULTIPLIER = 4;
 /** Odds of shiny magikarp will be 1/value */
 const SHINY_MAGIKARP_WEIGHT = 100;
 
-/** Odds of event sale will be 1/value */
-const EVENT_THRESHOLD = 20;
+/** Odds of event sale will be value/100 */
+const EVENT_THRESHOLD = 50;
 
 /**
  * Pokemon Salesman encounter.
@@ -122,10 +122,11 @@ export const ThePokemonSalesmanEncounter: MysteryEncounter = MysteryEncounterBui
     ) {
       // If you roll 20%, give event encounter with 2 extra shiny rolls and its HA, if it has one
       const enc = randSeedItem(validEventEncounters);
+      const thresh = globalScene.getModifiedShinyThreshold();
       species = getPokemonSpecies(enc.species);
       pokemon = new PlayerPokemon(species, 5, species.abilityHidden === Abilities.NONE ? undefined : 2, enc.formIndex);
-      pokemon.trySetShinySeed();
-      pokemon.trySetShinySeed();
+      pokemon.trySetShinySeed(thresh); // Apply event shiny boost even though it's a PlayerPokemon
+      pokemon.trySetShinySeed(thresh);
     } else {
       pokemon = new PlayerPokemon(species, 5, 2, species.formIndex);
     }
diff --git a/src/field/pokemon.ts b/src/field/pokemon.ts
index 22ede4260c3..6a030ae8e76 100644
--- a/src/field/pokemon.ts
+++ b/src/field/pokemon.ts
@@ -3165,7 +3165,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
   /**
    * Function that tries to set a Pokemon shiny based on seed.
    * For manual use only, usually to roll a Pokemon's shiny chance a second time.
-   * If it rolls shiny, also sets a random variant and give the Pokemon the associated luck.
+   * If it rolls shiny, or if it's already shiny, also sets a random variant and give the Pokemon the associated luck.
    *
    * The base shiny odds are {@linkcode BASE_SHINY_CHANCE} / `65536`
    * @param thresholdOverride number that is divided by `2^16` (`65536`) to get the shiny chance, overrides {@linkcode shinyThreshold} if set (bypassing shiny rate modifiers such as Shiny Charm)
@@ -3195,7 +3195,7 @@ export default abstract class Pokemon extends Phaser.GameObjects.Container {
       shinyThreshold.value = thresholdOverride;
     }
 
-    this.shiny = randSeedInt(65536) < shinyThreshold.value;
+    this.shiny = this.shiny || randSeedInt(65536) < shinyThreshold.value; // If it's already shiny, don't un-shiny it
 
     if (this.shiny) {
       this.variant = this.generateShinyVariant();
diff --git a/src/timed-event-manager.ts b/src/timed-event-manager.ts
index 84d70930fe6..7bbd157948b 100644
--- a/src/timed-event-manager.ts
+++ b/src/timed-event-manager.ts
@@ -310,47 +310,6 @@ const timedEvents: TimedEvent[] = [
       },
     ],
   },
-  {
-    name: "Spring 2025",
-    eventType: EventType.SHINY,
-    startDate: new Date(Date.UTC(2025, 2, 30)),
-    endDate: new Date(Date.UTC(2025, 4, 30)),
-    bannerKey: "spr25",
-    scale: 0.21,
-    availableLangs: ["en", "de", "it", "fr", "ja", "ko", "es-ES", "es-MX", "pt-BR", "zh-CN"],
-    shinyMultiplier: 3,
-    upgradeUnlockedVouchers: true,
-    classicWaveRewards: [
-      { wave: 8, type: "SHINY_CHARM" },
-      { wave: 8, type: "ABILITY_CHARM" },
-      { wave: 8, type: "CATCHING_CHARM" },
-      { wave: 25, type: "SHINY_CHARM" },
-    ],
-    eventEncounters: [
-      { species: Species.NIDORAN_F },
-      { species: Species.NIDORAN_M },
-      { species: Species.EXEGGCUTE },
-      { species: Species.HOPPIP },
-      { species: Species.PINECO },
-      { species: Species.TOGEPI },
-      { species: Species.TORCHIC },
-      { species: Species.NOSEPASS },
-      { species: Species.SPOINK },
-      { species: Species.STARLY },
-      { species: Species.SHINX },
-      { species: Species.PACHIRISU },
-      { species: Species.CHERUBI },
-      { species: Species.MUNCHLAX },
-      { species: Species.TEPIG },
-      { species: Species.PANSAGE },
-      { species: Species.PANSEAR },
-      { species: Species.PANPOUR },
-      { species: Species.SEWADDLE },
-      { species: Species.ARCHEN },
-      { species: Species.JANGMO_O },
-      { species: Species.APPLIN },
-    ],
-  },
 ];
 
 export class TimedEventManager {