Please share your theory about high S&H!
Ok I sell handmade stuff. I was trying to figure out what was the best amount to charge for shipping. I also have a business account with PayPal. So I charge a certain amount for an item, then I charge an amount for shipping. Based on the percentage of the sale, PayPal takes their cut. So they chop into the shipping amount, which means the amount that I charge gets chopped into to cover the shipping. If I go higher on the shipping, I don't lose profit. It evens it out. But if I keep low shipping, I have to charge more for the product.
So the seller has to decide do they want to lose profit, or charge more on the shipping. If a product cost $12, you gotta consider everything. That person had to pay for the ingredients, they gotta pay for the container/lid, the label, their time and energy, the packaging, going to the post office, paying for a shipping label to you can track your order, paper, ink, office supplies, equipment, utilities, etc... you gotta pay for the website too.