Because of Kindle restrictions I cannot give away free copies of my own work whenever I want, I must select promotional days of which I only have 5, on which to give away the book to everyone.
But I can loan out the copy that I buy. So, I wanted to buy multiple copies on this promotion day so I could loan them out later and to multiple people.
I had already loaned out a copy, and I think this confused the system because now my book shows in the "Manage your Kindle" section as both on loan, and today as the purchase date.
So to sum up, no you can't buy multiple copies, if you own a copy I can see no way to buy a second one, if you buy one while yours is on loan it will confuse the system, and if your book is on loan you can buy and gift one, but if you buy a second one for yourself you then can't gift it.
I will be cross posting this to the KDP forums as I'm an author.
Sidenote: "Warning: this topic has not been posted in for at least 120 days. Unless you're sure you want to reply, please consider starting a new topic."
This kind of thing is a stupid policy across the Internet. Which do you want people to search before they ask questions or to not necro post? Because these goals conflict.
If I know that necro posting isn't permitted then search results are worthless because any question I look at is to some possibly significant degree out of date therefor it behooves me to skip searching entirely and post my question anew as I'll get a more up to date answer and save myself the time spent search.
If I know necro posting is permitted then potentially even a thread started 5 years ago may be of use to me because of recent activity.