Good structure so far

src/Printbase.Domain/Entities/Products/ProductVariant.cs

@@ -2,12 +2,26 @@ namespace Printbase.Domain.Entities.Products;
 
 public class ProductVariant
 {
-    public Guid Id { get; init; }
-    public Guid ProductId { get; init; }
-    public string? Color { get; init; }
-    public string? Size { get; init; }
-    public decimal Price { get; init; }
-    public decimal? Discount { get; init; }
-    public int Stock { get; init; }
-    public Product Product { get; init; } = null!;
+    public Guid Id { get; set; }
+    public Guid ProductId { get; set; }
+    public string? Color { get; set; }
+    public string? Size { get; set; }
+    public decimal Price { get; set; }
+    public decimal? Discount { get; set; }
+    public int Stock { get; set; }
+    public string? SKU { get; set; }
+    public Product Product { get; set; } = null!;
+    public DateTime CreatedAt { get; set; }
+    public DateTime? UpdatedAt { get; set; }
+    public bool IsActive { get; set; }
+    
+    public decimal GetDiscountedPrice()
+    {
+        if (Discount is > 0)
+        {
+            return Price - Price * Discount.Value / 100m;
+        }
+        
+        return Price;
+    }
 }