coupon to discount shipping
is it possible to use a coupon to discount shipping when using flat rate shipping? Any other ideas?
Here is the scenario:
This is good:
buy 1 tshirt of design "A" = $10 shipping
buy 2 tshirts of same design = $10 shipping for first, and + $3 for second
problem:
buy 1 tshirt of design "A" = $10 shipping
buy 1 tshirt of design "B" = $10 shipping
(shipping is too much = $20 )
Another problem:
buy 1 tshirt of design "A" size "med" = $10 shipping
buy 1 tshirt of design "A" size "large" = $10 shipping
should be $13 not $20 based on "good" set up from above