Why is Royal Mint more expensive?

Could you please elaborate on why the Royal Mint issues coins and bullion at a premium compared to other mints? Are there specific factors that contribute to their higher prices, such as the quality of the metal used, the rarity of the designs, or the reputation and prestige associated with the Royal Mint? Additionally, do they offer any unique features or benefits that justify their higher cost? Understanding these details may help explain why collectors and investors are willing to pay more for Royal Mint products.