Question about tax & shipment functionality

Hey all,

I've been playing around with OpenCart today and have to say it's a great product. Were moving on from osCommerce to OpenCart because of lack of a clear structure and because we've adjusted the core code to much.

Now I've made a list of shopping cart functionality we have to have, and most of them are available in OC.

My question is; does OC support the following functionality?

- Shipment rates per customer group?

- Tax rates per customer group?

- Sending order PDF invoices to customers?

- Adjusting payment terms per customer or customer group?

I've done some research and I do believe there are no extensions for the above mentioned functions. I hope I missed something though! Commercial extensions, links to adjusting core code, any help is welcome!

Thanks in advance!

Regards,

Fynn