Why do prices vary on private number plates?

Prices mainly come down to scarcity and demand how rare the combination is and how many people want something similar. Plates tend to cost more when they’re short and clean, easy to read, work for common initials/names or don’t show a year identifier (dateless-style).

Some niche plates can also be expensive if they’re rare and strongly match a specific name, brand or high-demand idea, which is why prices vary so much across personalised number plates.