Ethereum merge is the process of merging Eth mainnet with the Beacon network, which is now running and based on PoS. Let's not discuss once again what PoS and PoW are, but consider this event from a price point of view.
Big thread🧵
Will gas get cheaper?
Not immediately. The merger is an internal technical update, so don't expect gas fees to go down right away. Only when the next step of the roadmap, sharding, is implemented will network capacity increase dramatically and allow for lower fees.