Anyone able to help a writer figure out how to phrase their pricing?

I've had a couple clients express some confusion over my pricing, especially given the way my pricing sheet is written. Those examples are three separate categories of stories, but something about the presentation just doesn't seem right. So, any advice on reworking a price sheet for a writer? I'd like to have something visual to accompany my self-promotion posts?

The most important thing I want to clarify is my pricing for stories: 4¢ per word for stories up to 4,000 words is the intended pricing. I impose a 1,000 word ($40) minimum just because that is the lower bound of what I can typically do for someone. I know some folks would rather see this described as $4 per 100 words, which I could use on the price sheet instead.

I'd also like to charge an increasing rate for stories past 4,000 words since it gets exponentially harder to focus and edit. My current plan is to add a penny per word at regular intervals past that, but some folks seem to think there's a discontinuity in the pricing. That is, they think that 4,000 words is $160, but 4,100 words would cost $205 even though the higher rate would just apply to the amount above 4,000 words. Not sure how to phrase that in a way that's not overly complex.

Open to any suggestions here, really. I want it to be easier for people to understand what I'll be charging so that, hopefully, more of y'all want to commission me. :)