I'd have guessed that there's somewhere a warehouse full of Pi Zero Ws, but I can't buy one right now in Germany. There's a shop in Switzerland, but I'd have to pay import taxes and whatnot to get hold of that.
So, let's try a Model 3 B+ then... Same as before: Official vendors are almost all sold out, one has some but it's 15 to 20 Euro above the recommended price...
Something's broken in the reselling system if you ask me.
Are you discontinuing Zero and Zero W?
No. We seldom discontinue products, even where they have been superseded by more modern product at the same price point. Zero 2 W is $5 more expensive than Zero W, and joins the Zero family as a third member.
Note that Zero and Zero W are currently experiencing supply constraints in the context of the global semiconductor shortage. We hope that this will be resolved in 2022.
An econ student would probably tell you that this is the market adjusting (or trying to) against the official price not matching the supply/demand intersection, so they're only available at the "real" price that unofficial vendors provide. (Of course, it may be more complex than that simplistic reading, hence econ student :])
What you are seeing is probably because the 3B+ is the most sold version, and replenishing anything is slightly harder right now.