I am not sure if it is a dark pattern, but I hate it. Hidden tax/shipping costs. I have to go through the entire check out process, which is usually multiple sc

I am not sure if it is a dark pattern, but I hate it. Hidden tax/shipping costs. I have to go through the entire check out process, which is usually multiple screens, and requires a credit card to continue to find out how much shipping will be at the final confirmation screen. Is this done on purpose so they think people are already invested in the checkout, so they won't abandon it due to high shipping? Or notice shipping? I don't understand why not just give me an estimate based on fuzzy location before I start the checkout process, so I don't waste my time if the total cost is too high.