Where is the cheapest to buy ETH?

I'm curious, where exactly can one find the cheapest rates to purchase Ethereum (ETH)? Are there specific exchanges or platforms known for offering more competitive pricing? Is it better to look into decentralized exchanges or stick with the more traditional centralized ones? And how do transaction fees factor into the overall cost of buying ETH? Could you elaborate on some of the strategies or considerations one should keep in mind when seeking out the most cost-effective way to acquire Ethereum?