I have vendors drop-ship for me, and I have some items shipped from a fulfillment center, but I'll get along okay just using table weight-based rates. I have to overcharge shipping to be safe, but it's not a big deal since many item prices are $100-$1000 anyway.
Except for one issue. There is a $15 handling fee that one drop-shipping vendor charges me per order. So for that vendor's items, I need to add a one-time $15 fee per order. Is there any way to group these items so that the one-time $15 fee is applied as either shipping or handling if any of the appropriate items are in the order? Maybe with an attribute or something?
I'm new to Zencart but have been looking at it for several hours trying to figure this out.