Cost pro multiple of 12

[marrarosaa]

I have to calculate the shipping costs on the following schema:

 

up to 12 items --> 16 CHF

from 13 to 24 items --> 32 CHF

from 25 to 36 items --> 48 CHF

from 37 to 48 items --> 64 CHF

from 49 to 60 items --> 80 CHF

 

What can I use?

 

Thanks

 

Alex

[nvedia]

Does this serve the purpose?

http://www.oscommerce.com/community/contributions,928

[marrarosaa]

Does this serve the purpose?

http://www.oscommerce.com/community/contributions,928

 

Thanks I've already installed that but is not exactly what I need.

I need something that automatically every 12 quantities of differents items or for the same item 12 pieces add 16 CHF.

 

Example:

 

First condition

1 piece of 1 item --> 16 CHF

12 pieces of 1 item --> 16 CHF

13 pieces of 1 item --> 32 CHF

 

Second condition

1 piece of 12 items --> 16 CHF

1 piece of 13 items --> 32 CHF

 

Third condition (mixed)

3 pieces of 4 items --> 16 CHF

3 pieces of 5 items --> 32 CHF

 

1) Is there a way to know how many items is the customer ordering?

2) Is there a way to know of a certain item how many pieces it the customer ordering?

 

 

Thanks

Alex

[marrarosaa]

Problem found, it only was necessary to click on update button before checkout... :-(