Hello all!

I'm trying to zero in my shipping to be more efficient and save the customer and myself more money by refining my shipping templates. In doing this I am also trying to better understand how the shipping & handling is calculated at checkout when one of my many products are ordered.

I have values in all of my listings for item weight (safety & compliance tab) and package weight (offer tab).

My questions are:

1. What is the difference between Item Weight and Package Weight?

2. Is shipping & handling calculated using the listings Item Weight and Package Weight or both?

3. If not, how is shipping & handling calculated?

4. What other listing information is used by Amazon to calculate shipping & handling at checkout? (i.e. item length/width dimensions, etc.)

Thank you for all of your help and knowledge in this query.

Happy selling!