Reddit has a good list of providers here: https://www.reddit.com/r/usenet/wiki/providers
If you browse through the /r/usenet
subreddit, there are tons of opinions on services. Finding one that is not a reseller at your pricepoint might be a challenge.
My recommendation would be Usenetserver. They are a Highwinds provider and I've personally had good luck with them. There is a $10 price for Newsbin users and we get a few bucks back if you sign up through this link
You might have better completion with a news server outside of the US. If you are not coming from a US IP, you can sign up for Eweka
for instance. Again, if you follow that link, we get a few bucks out of it.
Hope this helps.