When you order, you need to check that you are on the bookshelf page, not the book description page.  Double check before finishing the order as this is a common mistake.  When you are ordering from a specific bookshelf, the confirmation will mention the name of the person at the top of the order page.

You want to make sure you are on that member's Bookshelf and using the [Order This Book] button on the far right. After you've clicked on that, you can double check the name by clicking on the [Order More From This Member] button and seeing the shelf of the member the request is going to. You never want to click into the book details page and use that Order button nor do you want to use the Order button from the yellow pop-up that opens when you hover over the book cover image.

Once the request has gone through, you can check again by going to your My Account page and clicking on the PM button on the transaction to see the name of the member who received the request.

Do you have RCS that were maybe declined by the person you were originally ordering from?  If you have RCS and want to order a deal or only from a specific bookshelf-you need to either turn them off or find out if they can meet the RCS before you order.

Whenever I am ordering books from a deal: I open a 2nd window to Amazon to look the book info up so I don't  accidentally move from their shelf.

I click on to start a PM, then click on the name to see if I go to the right profile or shelf. 

You do have an hour to cancel the order without questions.   The person will not even know about the order if you cancel within the first hour.

oops posted in the wrong place.

If they haven't printed the label yet, you can still cancel the order.  They'll get over it so don't feel guilty.