fixes

app/Models/Shop/PriceListValue.php

@@ -41,6 +41,6 @@ class PriceListValue extends Model
 
     public function scopeByQuantity($query, $quantity)
     {
-        return $query->orderBy('quantity', 'desc')->where($this->table . '.quantity', '<', $quantity)->first();
+        return $query->orderBy('quantity', 'desc')->where($this->table . '.quantity', '<=', $quantity)->first();
     }
 }

app/Models/Shop/Shelve.php

@@ -10,7 +10,7 @@ class Shelve extends Model
     use HasRelationships;
 
     protected $guarded = ['id'];
-    protected $table = 'shop_categories';
+    protected $table = 'categories';
     
     public function articles()
     {