Who has the cheapest brokerage fees?

I'm curious, when it comes to the world of cryptocurrency and finance, who exactly offers the most competitive brokerage fees? I'm always looking for ways to minimize costs while maximizing my investments, so knowing who has the cheapest rates is crucial. Could you elaborate on some of the key players in the market that consistently offer the lowest fees for brokerage services? Additionally, are there any factors that I should consider when comparing these fees, beyond just the dollar amount? Thank you in advance for your insights.