I was recently scouted by a small, local comic publisher and was offered a commission-type deal to produce a short story comic (and possibly longer comics). I made sure to research them, and luckily they are completely legit. Functional website, professional business emails, proper reviews of their comics on other sites, a couple fan pages, active social media, didn't show up on any artist beware sites, etc.
Thing is, I'm a complete newbie to the professional comic world and I've never freelanced for this type of work before. I haven't offered a page rate yet because I'm honestly not sure what to offer. I think I'll be doing almost everything on my own, including full coloring and rendering, with a semi-detailed cartoon style similar to the top western-style comics on Webtoon. Most of the fair page rate websites I've visited mainly list prices for large studios like Marvel, and I know their rates ($300-$500) most likely won't slide with a publisher this small. I can't really find any good sources on how small, indie publishers typically pay artists. I've seen everything from $20-$200 recommended, but that's a huge gap.
Any advice or recommendations for further research?