Before I hired fully in-house for content, I used https://www.iwriter.com.
That was before AI that I used them last, so I’m not sure if it’s became better or worse.
But what I liked about that site is your ability to choose the scale of quality (which meant change in price) or adjust by budget. Was super flexible, and fast.
Because it’s a big pool of writers, you could get content done in a day. And if you didn’t like it you didn’t pay, would kick it back to the writer pool, and you’d have another one next day again.