AND, I always have to show a shipping fee that is the highest possible, farthest, worst-case-scenario for shipping in the U.S. so that I won't actually lose money on shipping. I then have to go through the extra step in most instances and refund the overage to the buyer. I have to include language about all of this in each and every listing, so that potential buyers aren't scared off by that high shipping cost!
Can you see yet why I'm so anxious for a shipping calculator? Come on, Etsy—Ebay has had shipping calculators in their postings for YEARS—why can't we?