There are a few reasons why Parker pens are so expensive. The first reason is that Parker pens are made of high-quality materials. They use a variety of materials, including brass, gold, and plastic, to make their pens. This makes them durable and long-lasting. Another reason why Parker pens are expensive is because they require a lot of maintenance. They need to be regularly cleaned and oiled, and they need to be replaced when the ink runs out or the pen becomes dirty.