I have an issue when trying to search on lower value price range please see code sales works fine its just the lettings properties with lower values dont for some reason?

Any help appreciated thanks

 var model = new SearchViewModel
        {
            SearchTerms = new Dictionary<string, string>(),
            Location = "" + Request["Location"],//.ToLower(CultureInfo.InvariantCulture),

    MinBedrooms = Convert.ToInt32(Request["MinBedrooms"]),
    MinPrice = Convert.ToInt32(Request["MinPrice"]),
    MaxPrice = Convert.ToInt32(Request["MaxPrice"]),
}

 // Perform the search
        var searcher = ExamineManager.Instance.CreateSearchCriteria();
        //var searcher = ExamineManager.Instance.SearchProviderCollection["InternalSearcher"];
        var query = searcher.NodeTypeAlias("umbPropertyDetails");


    if (model.MinPrice >= 0 && model.MaxPrice > 0)
    {
        if (model.Department == "sales")
        {
            var paddedLower = model.MinPrice.ToString("D6");
            var paddedHigher = model.MaxPrice.ToString("D6");
            query.And().Range("price", paddedLower, paddedHigher, true, true);
        }
        else
        {
            var higher = model.MaxPrice.ToString();
            var lower = model.MinPrice.ToString();
            query.And().Range("rent", lower, higher, true, true);
        }
    }