Definitely, you should be able to get a shipping price without going into the checkout, Amazon makes it quite difficult compared to Aliexpress & eBay when it comes to finding out shipping prices, to the point that I avoid shopping on there with a rare exception occurring every 6 months or so.

For the average shopper, pricing in shipping and sales tax will make them buy more online. Breaking out sales tax has caused a 9% sales drop in states Amazon charges sales tax in.