I'm very similar to OP. I typically have one, 18g of bean coffee a day. Beans range from about 15-20/lb, so that's ~25 days of coffee, so between .60 - <1.00 a day.

My gear is a ~$250 hand grinder, an aeropress $40, and a flair manual espresso maker $250. Along with a kettle, $80, I'm able to make coffee and espresso that'll taste nearly as good as some of the best in the world.

It's part hobby, part practical.

I also love dinner coffee and understand cheap coffee has its time and place. For the majority of people it's good enough.

About $0.42 per “true” cup. That’s around 40 cups per week. If you’re talking 12oz coffee cups it’s closer to $1

About $0.90 per 250mL cup. I have multiple coffee subscriptions- I get a pretty good deal on on a monthly order that ends up costing $13 per 12oz bag. Then I regularly buy one-offs that average around $20 per 12oz bag.