One member has a spreadsheet with matrix of how much you’d need to make to keep your stores at an optimal level.
I’m more of a back-of-the-matchbook guy. If I average about 3 bottles a week, that’s 156 bottles a year. With giving some away, I’d say I need to make 180+ a year to keep supplies up (or 6 6-gallon carboys).
I think there’s about 230 bottles in the rack, with another 325+/- in carboys... total 555 bottles, or an excess of three years.
To keep stores up, I’ll make at least 8 carboys of wine, with 2 or more from fresh grapes and the rest from kits. Thinking about it, in 2018, I made 15 gallons of fresh zin grape wine and another 6-8 kits (36-48 gallons) or as much as 63 gallons of wine... It’s okay though, if it’s not enough I can always make more.
The wine closet has everything from 2015 (granted, not many) to 2018 wines in it.