diff --git a/RhSolutions.Tests/RealPricelistTest.cs b/RhSolutions.Tests/RealPricelistTest.cs
new file mode 100644
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+++ b/RhSolutions.Tests/RealPricelistTest.cs
@@ -0,0 +1,41 @@
+using Microsoft.Extensions.DependencyInjection;
+using RhSolutions.AddIn;
+using System.IO;
+
+namespace RhSolutions.Tests;
+
+[ExcelTestSettings(OutOfProcess = true)]
+public class RealPricelistTest : IDisposable
+{
+    private RhSolutionsAddIn _addIn;
+    private IReader _reader;
+
+    public RealPricelistTest()
+    {
+        _addIn = new();
+        _addIn.AutoOpen();
+        _reader = RhSolutionsAddIn.ServiceProvider.GetRequiredService<IReader>();
+    }
+
+    [ExcelFact(Workbook = @"..\..\..\TestWorkbooks\RealTestSpecification.xlsm")]
+    public void CanWrite()
+    {
+        Worksheet sourceSheet = Util.Workbook.Worksheets[1];
+        RhSolutionsAddIn.Configuration.SetPriceListPath(Path.GetFullPath(@"..\..\..\TestWorkbooks\RealTargetSpecification.xlsx"));
+        var products = _reader.ReadProducts(new[] { sourceSheet });
+        var _writer = new ExcelWriter(Util.Application, RhSolutionsAddIn.Configuration);
+        _writer.WriteProducts(products);
+        Worksheet targetSheet = Util.Application.ActiveWindow.ActiveSheet;
+        targetSheet.Range["A1"].Formula = "=SUM(H:H)";
+
+        Assert.Equal("RealTestSpecification", products.First().Item1);
+        Assert.Equal("RealTargetSpecification.xlsx", Util.Application.ActiveWorkbook.Name);
+        Assert.Equal(1188.0, targetSheet.Range["A1"].Value);
+    }
+
+    public void Dispose()
+    {
+        _addIn.AutoClose();
+        Util.Application.ActiveWindow.Close(SaveChanges: false);
+    }
+}
diff --git a/RhSolutions.Tests/TestWorkbooks/RealTargetSpecification.xlsx b/RhSolutions.Tests/TestWorkbooks/RealTargetSpecification.xlsx
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diff --git a/RhSolutions.Tests/TestWorkbooks/RealTestSpecification.xlsm b/RhSolutions.Tests/TestWorkbooks/RealTestSpecification.xlsm
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