one-time service charge

Hi there. I need to set up a one-time (per-order, not per-product) service charge for one category.

Can someone point me in the right direction?

Apologies if this is a glaringly obvious question or answered elsewhere..

Thanks very much

Well ...

We have the one time charge on a product per order where you can order 27 of a product but get charged once for that product ...

We don't have a one time charge per Category per order ...

Can you give a real world example of how that would work? :unsure:

Thanks. I might not have been clear. Out of all the categories of products, only one needs to have the one-time per-order service charge.

This is a non-profit org, which sells a bunch of things which are essentially donations (donate 75 bucks and get a hat), but also tickets. The tickets need to have a service charge, but nothing else.

Does that make sense?

Thanks much.

You can't add an attribute for that? Or are you saying that regardless of what tickets are added there is only 1 service charge?

That's correct. If they select one or more tickets there's exactly one service charge. If they select anything else and no tickets, there's no service charge.

You might look at customizing an Order Totals module to check if any of the products belong to the given category or a given list of products_id or ... the better way is to add a flag/field to the products table to mark the products as needing the one time charge then if any product in the cart is added with the flag marked it would trigger the order total module which would produce a single line item charge on the totals for this and actually look rather professional in that manner ...

Thanks very much. I'll take a look at adding the flag to the products table.

<..checking the faq pages for info on customizing modules..>

Did you finally get this figured out? I'm trying to do the same thing: One time set-up charge regardless of how many different attributes (colors) are chosen.
The way it's set-up now, it shows the charge every time the customer selects a different attribute: ie We imprint products that come in various colors. The customer selects the quantities of the various colors as separate attributes but each time the set-up charge appears. Need just ONE set-up charge.