What is going on with shipping calculator?

[the*vintage*table]

I recently added a listing with calculated shipping, priority mail.  The box weighs 3lb 14 oz.  Calculated shipping is showing me the price to ship to Los Angeles (from NC) regardless of what I put in the zip code box.  If I put in there my OWN zip code, it shows me the price for postage to CA.  The listing is for some acrylic tissue boxes, and the postage is almost as much as the item price. 

I just now printed a label through paypal/shipnow to send something to my son with a box almost the same weight, in Connecticut.  The shipping cost was under $7.  WTH is going on? 

[partial*eclipse]

Most likely something was entered wrong in the shipping calculator. However, there's no real explanation for $17.15 showing up for every ZIP Code, other than entering that amount as a flat shipping cost.  Click on "Sell similar" to  bring up a duplicate of the listing form so you can look into the setup.

[the*vintage*table]

Nothing entered wrong; I double checked. In fact, I have the weight entered at 3 lbs even though it is closer to 4 lbs because when I did it at the correct weight the price was even higher. I edited the listing again to take the shipping out completely and it is still the same!