How is “on sale” used?

In National Theatre Live: Prima Facie (2022), one line is: “'I saw it on sale. It looks like what a lawyer would wear.'”

Which movie is “on sale” from?

The clip at the top of this page is from National Theatre Live: Prima Facie (2022).

'I saw it on sale. It looks like what a lawyer would wear.'

8 作品で登場 · 1 本目

being offered at a reduced price; available to be bought, especially in a shop / store

アメリカ英語 · 13 本の映画に登場イディオムを再生

オックスフォード映画の 50%
being offered at a reduced price
No, I got it on sale. Don't wear it, don't wear it. It's fine.
'I saw it on sale. It looks like what a lawyer would wear.'
オックスフォード映画の 50%
available to be bought, especially in a shop / store
Will be kicking off their North American tour. Tickets on sale now.
l think we should put these new shirts on sale. What do you think?

定義：Oxford Advanced Learner's Dictionary 第 9 版