With one week to go before launch, someone on the project I am currently working on has decided that we need to itemise eco-tax individually for all products (as an optional text field, which gets added to the final bill in the checkout).

A quick search doesn't seem to reveal any discussion of it in these forums, but just in case, has anyone else had to deal with this already? I'm thinking I'll have to develop a "modulette" to handle it - add a price field to the products, then use form_alter (or maybe one of the available hooks) to add it to the invoice amount at the checkout stage. I'll need to display it as a per-product thing (like an attribute) and also sub-total it at the bottom of the invoice.

Regards,

- Paul