Hello,
I'm working with a customer that wants to add custom handling prices to classes of products within their store.

e.g.
Type 1
Type 2
Type 3

During checkout, we want to check the Type of the product to calculate handling prices appropriately. If there are two products in the shopping cart, we'd like the one with the greater handling price to override the other.

I'd like to add a handling price to a specific category, but that doesn't seem to be something that ZenCart allows. Would you say that product attributes are the best way to go?

I've wondered about adding a custom product class, but I can't read any custom attributes without modifying order.php which I would rather not do.

Any thoughts would be quite welcome.