First, let me thank you for your replys!
I´m getting the hang of it, I think :) The dream would be that me and my living partner cud have two online shops. I really want to sell horse equipment, and the other site would be a different team - putting those together in one shop, I think would be a little "messy". But I think I need several dropshippere for just only the horse store to, to get all things that I want. And have wondered how to do it with the shipment if the buyer buys from several. So thanks for that tip as well!
I´m mainly focusing to sell out to my country, Norway, and not planing so much on ebay either, at the moment.
Not sure how to fix the shippment problem. When a customers buy something from the store, when they check out, its general one shipping cost, this is when items are sold in the country, from place to place IN Norway. Ok, the same thing if I use dropshippers outside Norway, but if they buy from, let say, 3 different droppshippers at one time? What then? But I guess I must learn and read more about this.