Per hour guarantees that you're going to get paid for all your work. Fixed-price often makes clients think they can squeeze in a bunch of changes for no cost. W

Per hour guarantees that you're going to get paid for all your work. Fixed-price often makes clients think they can squeeze in a bunch of changes for no cost. While there are things that can mitigate this, like contracts, statements of work, and communication, it still can lead to a bigger headache than necessary.