presales questions

We are a hosting company looking to change to a new supplier of shopcarts

1) Are there plugins so it will integrate with UPS shipping, USPS (united states post service), and FedEx?

2) If so, can you configure them to add an extra 'handling' fee to the order?

3) If so, can a customer enter their zip code somewhere to estimate shipping without having to create a user account or login?

4) Do you have a reseller program - since we are a hosting company we would be purchasing a lot of them

5) is there a server-wide version for hosting customers where we can admin a server version where we can install many shops from that?

6) If there is not either #4 or #5, do you have a discount for multiple purchases? Do they all need to be bought at the same time?

7) In customer front end, are there bonus points, discounts by quantity ordered, sales price (with retail price also showing), coupons that give better price/discount, etc.

Are there promotional things like Tell a Friend, Related Products, Most Popular Products, Reviews by customers, ratings by customers?

Thanks!