sell out

US /sel aʊt/
UK /sel aʊt/
"sell out" picture
1.

to sell all of something, so that there is no more left for people to buy

:
The concert tickets sold out in minutes.
The new phone model sold out on the first day of release.
2.

to betray one's principles or former associates for personal gain

:
Many fans felt the band sold out when they started making commercial music.
He was accused of selling out his friends for a promotion.