Let’s say you want to ship to UK, Europe and Rest of World, and have different shipping prices per product. Let’s say that highest shipping price is used and add-on is 50%

Product A Shipping: $5 UK, $10 Europe, $20 ROW

Product B Shipping: $6 UK, $12 Europe, $24 ROW

If I have 2*A and 3*B in cart shipping price is:

UK: $6+2*$3+2*$2.50

Europe: $12+2*$6+2*$5

ROW: $24+2*$12+2*$10

Example 2 – Complex

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Take a deep breath!

Lets keep it simple – add-on percentage defined as 50%

If I have Book A defined as follows:

$10 USA, $15 CAN, $25 ROW

Book B: $7 USA, $12 CAN, $20 ROW

And Dvds defined as:

$3 USA $8 CAN, $10 ROW

If I buy 2 * Book A + 1 * Book B + 2 * Dvd the cost would be:

USA = $10+$5+$3.50+$3+$1.50

CAN=$15+$7.50+$8+$4

ROW=$25+$12.50+$10+$10+$5