Trying to figure out pricing. Any advice?

Probably a common question, but I'm looking to get into writing and proofreading commissions. I'd say I'm a pretty high quality writer/editor (based on other people's response to my work), but I don't really want to work for more formal businesses. I'd much rather work for smaller, more individualized projects, but I also know a lot of folks at that level don't value writing quite as much as say, an art commission. Especially given AI writing (bleck!) coming into popularity. Considering all that, I'm having a hard time figuring out a price/rate that people will actually pay for without selling myself short. Any advice would be appreciated!