eBay

I understand that ebay automatically invoices the customer when a sale is confirmed that is not buy it now. Is this always the case? If so, should I also send an invoice with personal language, or is this too much and/or too confusing for the buyer?

Hello to all of you generous experts,I'm concerned about the cost of listing items, which will eat away at my profits the more items I have for sale. Right now I have about 100 items on auction. If they don't sell, I relist them. Also, I have MANY ot...