quop 
NewsHosting currently offers USD$1.67/month (~US$25/year) unlimited, but you can stack it as many times as you can, effectively locking the price for multiple years to come.
This is probably the closest to the previous deal of US$20/year unlimited, and comes with some nice extra bonus:
* 1TB Easynews
* 1TB Tweaknews
* PrivadoVPN
For more info about usenet and NewsHosting you can refer to the previous deal as well as the Reddit post from the NewHosting rep
I would also recommend you to complement it with some block accounts in different backbones. There are many deals going at the moment. My personal picks are Blocknews 3TB Block US$14.99 and ThunderNews 500GB for US$3.00.
