From e5336d313f7db326a59cec589df02138e7c33800 Mon Sep 17 00:00:00 2001
From: Denis Ranneft <denis@ranneft.ru>
Date: Mon, 6 Apr 2026 02:21:36 +0300
Subject: [PATCH] fix prices

---
 backend/internal/changelog/data/changelog.json | 11 +++++++++++
 backend/internal/game/town_merchant_gear.go    | 13 ++++---------
 backend/internal/handler/npc.go                |  2 +-
 3 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/backend/internal/changelog/data/changelog.json b/backend/internal/changelog/data/changelog.json
index 48894b4..6cf4147 100644
--- a/backend/internal/changelog/data/changelog.json
+++ b/backend/internal/changelog/data/changelog.json
@@ -1,5 +1,16 @@
 {
   "releases": [
+    {
+      "version": "0.3.1-dev",
+      "title": "AutoHero — 0.3.1",
+      "items": [
+        "Graphics optimization! We've found a bastard. Minimap was causing huge recalc.",
+        "Auto potions (now hero will use them even in the online battle",
+        "Formulae for atk reworked",
+        "Reduced merchant and monster meet chance",
+        "Something else"
+      ]
+    },
     {
       "version": "0.3.0-dev",
       "title": "AutoHero — 0.3.0",
diff --git a/backend/internal/game/town_merchant_gear.go b/backend/internal/game/town_merchant_gear.go
index 3efe495..53c826d 100644
--- a/backend/internal/game/town_merchant_gear.go
+++ b/backend/internal/game/town_merchant_gear.go
@@ -78,15 +78,10 @@ func RollTownMerchantOfferGold(ilvl int, rarity model.Rarity, townLevel int) int
 	perIlvl := tuning.EffectiveMerchantTownGearPricePerIlvl()
 	variance := tuning.EffectiveMerchantTownGearPriceVariancePct()
 	ilvlPart := float64(ilvl) * float64(perIlvl) * townMerchantRarityPriceMul(rarity)
-	curve := float64(ilvl*ilvl) / 6.0
-	mean := float64(anchor) + ilvlPart + curve
-	if mean < 1 {
-		mean = 1
-	}
+	mean := float64(anchor) + ilvlPart
+
 	v := float64(variance) / 100.0
-	if v < 0 {
-		v = 0
-	}
+
 	if v > 0.45 {
 		v = 0.45
 	}
@@ -94,7 +89,7 @@ func RollTownMerchantOfferGold(ilvl int, rarity model.Rarity, townLevel int) int
 	factor := (1.0 - v) + rand.Float64()*(2*v)
 	cost := int64(mean*factor + 0.5)
 	if cost < 1 {
-		cost = 1
+		cost = int64(mean)
 	}
 	return cost
 }
diff --git a/backend/internal/handler/npc.go b/backend/internal/handler/npc.go
index 8f508e6..c9f81cf 100644
--- a/backend/internal/handler/npc.go
+++ b/backend/internal/handler/npc.go
@@ -962,7 +962,7 @@ func (h *NPCHandler) MerchantStock(w http.ResponseWriter, r *http.Request) {
 	townLv := game.TownEffectiveLevel(town)
 	n := tuning.EffectiveMerchantTownStockCount()
 	slots := model.GearVendorSlots(npc.Type)
-	items := game.RollTownMerchantStockItemsForSlots(townLv, n, slots)
+	items := game.RollTownMerchantStockItemsForSlots(int(float64(hero.Level) * float64(1 + hero.Level / townLv)), n, slots)
 	costs := make([]int64, len(items))
 	for i, it := range items {
 		if it == nil {