ausverkauft
sold out
Describes a state in which all available copies of a product or all tickets for an event have been sold.
Das Konzert war innerhalb von Minuten komplett ausverkauft.
The concert was completely sold out within minutes.

sold out
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sold out
Describes a state in which all available copies of a product or all tickets for an event have been sold.
Das Konzert war innerhalb von Minuten komplett ausverkauft.
The concert was completely sold out within minutes.

'Ausverkauft' (sold out) is the past participle of the separable verb 'ausverkaufen' (to sell out). This verb means to sell all copies or units of something until nothing is left.
Der Händler hat alle seine alten Modelle schnell ausverkauft.
The dealer quickly sold out all his old models.
This adjective is usually used predicatively with the verb 'sein' (to be). So the structure is: 'Etwas IST ausverkauft' (Something IS sold out).
Die Tickets für das Finale sind schon seit Wochen ausverkauft.
The tickets for the final have been sold out for weeks.
To emphasize that truly nothing is available anymore, 'ausverkauft' (sold out) is often combined with adverbs like 'komplett' (completely), 'völlig' (entirely), or 'restlos' (completely).
Das Festival war dieses Jahr wieder restlos ausverkauft.
The festival was completely sold out again this year.
The figurative meaning always refers to people or creative groups (e.g., a band, an artist). It expresses a negative judgment that someone has betrayed their ideals for money.
Einige Kritiker werfen dem Regisseur vor, er sei mittlerweile völlig ausverkauft.
Some critics accuse the director of being completely sold out by now.
available
'verfügbar' and 'ausverkauft' form a clear opposite pair for products or tickets. If something is 'verfügbar', you can still buy, book, or use it. If something is 'ausverkauft', all copies or seats/tickets have been sold. So 'ausverkauft' only fits when talking about things that are sold, for example concert tickets, books, or goods in a store. 'verfügbar' is more general and can also work for appointments, rooms, or information.

Die Karten für das Konzert waren schon nach einer Stunde ausverkauft.
The tickets for the concert were sold out after just one hour.
Sind für den Kurs am Montag noch Plätze verfügbar?
Are there still places available for the course on Monday?