Usenet wiki (unfortunately we don’t have one on Lemmy): https://reddit.com/r/usenet/wiki/faq
Two 1 TB blocks on different backbones for $15: https://portal.usenetprime.com/cart.php?a=add&bid=37.
3 TB for $15 (4000+ retention): https://billing.blocknews.net/signup/blockfriday
6 TB for €15 (2800+ retention ): https://www.bulknews.eu/checkout?product_variation=43&locale=en%2F and use the code bf241. Bulknews is on Abavia backbone.
4 TB for $25 (4633+ retention): https://newsgroupdirect.com/member/billing/?plan=ce57&planid=233&yes_tracking=1
500 GB for 10.50 till January 3 (3000+ retention): https://usenet.farm/
The retention might not be accurate, probably larger.
It is nothing to be embarrassed about, usenet is very old which is why most people don’t knwo about it. Usenet has been around since 1980. You can refer to the below link for more info.
https://reddit.com/r/usenet/wiki/faq
https://en.m.wikipedia.org/wiki/Usenet