sell out (of something)
Definition: If a shop sells out of something, it is no longer available because the shop has sold them all.
(This phrasal verb has more than one meaning)
E.g.1: I went to the computer shop to buy PlayStation 2, but they had sold out. They said that they would get some more in January.
E.g.2: They were so cheap that the shop quickly sold out of them.
This phrasal verb cannot be separated.