I need an audio editor

I’m a voiceover artist and regularly record audiobooks for audible and Amazon. I record in my home studio and usually edit the books myself. As I’m getting busier, I’m wondering if it might be more beneficial for me to hire an editor to edit the guides for me. The audiobooks are usually 7-18 hours long of finished audio. I could provide all the recorded files and the turnaround for editing would bd between 2-4weeks depending on the project. I’d like to find out if it would be cost effective for me to hire an editor so if you could give me some quotes that would be great.