Since we can delete items, I was wondering if there is/was an item wich doesn't exist anymore cause all of them are deleted now?

All items, past and present, with exclusion of CWs, are listed in the Item Directory found in Centropolis. Even if they are deleted to the point of no longer "existing" on the site.

Case in point: there was a shrimp minion that had completely screwed up RNG drop statistics that people were getting time and time again from the Delphi Crate. Its value plummeted then it kind of vanished off site, despite it still being a thing.

There are many items that are currently unavailable in either official shops or user shops. These items might be floating around in people's vaults or pet TCs. They might be "locked" in accounts either in collections, read, eaten, played with or used (opened, transformed, etc).

There are also a handful of items that were drawn, but never released. Like: Charity Basket - October.

These items still "exist" such that they are pixels drawn in a computer file. Nothing is ever permanently gone. Old items can be released through the crystal shop, token shop, free gifts, the Hustler, etc. In the past, they have also release "unreleased" items, so even those aren't guaranteed to remain forever unobtainable.

& Thank you guys for ur answer :)