Specific customer set discount?

I'm going to use my website as an wholesaler but I want to give dropship customers discount specific to there account.

For example, normal customers for an item will cost 10, when a drop shipper logs in, it will be 7. How can I do this?

create a group for the dropshippers then set a discount price with a qty 1 and that group then that's the price they will see.

I have this same scenario in my OC 1.5.0. store.

Just set up a new "Customer Group" for the drop shipper(s) and set the "Special" price to 7 for the item. As long as the drop shipper is logged in, he will get that price.