How much are trades on Coinbase?

I'm curious to know, could you please elaborate on the fees associated with trading on Coinbase? Specifically, are there any flat fees, percentage-based charges, or other costs that traders need to be aware of when conducting transactions on the platform? It would be great if you could also provide an example of how these fees might impact a typical trade, so that traders can make informed decisions when using Coinbase for their cryptocurrency transactions.