How much does it cost to buy gear for Mount Everest?

Can you give me a rough estimate on the cost of gear required to climb Mount Everest? I understand that it's a significant investment, but I'm curious about the breakdown of expenses, such as for clothing, equipment, and safety gear. Are there any specific brands or types of gear that are considered essential for a successful ascent? And is it necessary to rent or purchase certain items? I'm looking to prepare as thoroughly as possible for this monumental challenge.