Best practices for handling of shipping in the store

Barnstormonline.com has a wholesale business and a retail business. We use a third party PPS.

On the wholesale side, we have no idea what shipping will be at time of order. Until the order is packed and shipped, it's pure speculation due to the nature of our product packaging and order diversity - 400 widely varying SKUs. We a high volume, low transaction value company. We ship one way - UPS ground.

So, we would prefer not to have any shipping information at all appear in the store, rather adding it into Item fulfillments and invoices when we have the actual costs. In configuring both the shopping cart and the order entry functions in My Account, we have been told by different Netsuite resources that there is no way to turn off the shipping fields. Best you can do is set them to "$0" or some "estimate" value, which is what we are doing. Then, you charge the terms where ever you can to "explain" our shipping practices.