> I want my default pricing to show 'login for pricing' instead of
> prices, but then want to have customers either automatically
> updated so they can see pricing, or receive an automatic email
> after a new login is created so I can manually activate the
> customer. Is this possible?
Yes, the both ways are possible. It can be setup so customer see prices and able to checkout right after registration or/and they will have to wait for your approval. Here is an example of one of our stores doing the same: http://www.patapum.com/
For example, you can have retail and wholesale memberships. There are lots of wholesale tools available in the system, like full membership management with unique prices and price breaks per membership, min order qty per each product, qty pricing and etc.