Rolls-Royce is vastly expanding its factory in Chichester, England. The BMW subsidiary is adding five new buildings with construction planned to start next year, CNN reports.

Usually, when a carmaker expands a factory it’s for one simple reason: building more cars. But this is Rolls-Royce. Making and selling more Rolls-Royces would undermine the brand’s vaunted exclusivity.

So this factory expansion isn’t about making more cars, but making more expensive cars, which takes more time and requires more space for workshops and storage of exotic materials.

The expansion signals something about Rolls-Royce’s ultra-wealthy clientele. While they can only buy so many cars, they can certainly spend more on each one.

Since 2020, Rolls-Royce sales have increased 17%, reaching a record of 6,032 cars and SUVs worldwide last year. Over that same time, though, the average amount of money customers paid for their cars increased 43%, going from $350,000 in 2020 to $500,000 each, on average, last year.