When I go to nostr.wine, it tells me it is 18,888 sats to join.  Is that forever, a year, a month, or something else.  If that is forever, it is a no brainer.  If it is a year, it is almost as certain.  If it is something shorter, I'll have to decide what I want to do.  I'll run out of sats in my alby wallet pretty fast.  I can't find details on what I'm paying for. 

 wine is once 

 ah, yep, it's a one time

the extra is to use wss://filter.nostr.wine 

 yeah it's about 10000 sat/month,  but big discounts for longer periods, 30k gets like 5 months, iirc