It's so easy to mix things up. When I sell on here I made a list of what is on the ad. Then at the bottom of the list, I type 1-15. The buyer's name goes on the number. Then I pull the item out of the box, first PM at a time and match up for shipping. On the side of the envelopes I write the name of the person who is buying. I PM the buyer, and when it's paid for it get's moved to another location in my house. And I put a return address sticker on it so I know it's ready to go. You have to be really organized to sell items. I can't imagine what I would do if I had eBay to worry about. LOL