It’s $3 for 3 days of usenetserver.com. I think that’s how most of us got them. I believe they even give you a free 1 day trial the first time you use them. 10 MB/s for me there.
Best of luck. I’m certainly not going to be uploading them anywhere while they’re still available by those means. If people are struggling to find these next year, we should make sure they’re preserved. But for now I think I’m just going to point my finger to where they are easily found. 😃