Products that need the flat shipping rate should have a weight of 1 in the associated pricing engine. You would then create a non-integrated shipping method. The non-integrated shipping method would have a handling fee equal to the initial flat rate minus the cost of the later flat rate. Then a per-unit charge equal to the later flat rate.
For example:
1st item flat rate = $10
2nd item flat rate = $8
handling = $2
per-unit charge = $8
1 item = weight of 1 = 2 + 8 = $10
2 items = weight of 2 = 2 + 16 = $18 (10 + 8)
3 items = weight of 3 = 2 + 24 = $26 (10 + 8 + 8)
Article ID: 487, Created: February 11, 2014 at 9:09 PM, Modified: January 14, 2020 at 8:56 AM