I purchased the cart in april and went live in December. This issue is a real worry with a live site. Basically I'm not marketing the site and encouraging sales until I can get a fix for obvious reasons.
I am less interested in having a checkbox to cover my back and more interested in having the shipping costs added at the time of purchase.
Shipping isn't added to the cart, for the first item - instead TBD is displayed by the shipping price.
If I click the 'update cart' button in checkout the shipping is then displayed.
If further items are added to the cart the shipping is shown and shipping for the initial first item is also displayed (replacing the TBD).
I'd be grateful if you could look into this.