How is “shell out” used?

In 24 Hour Party People (2002), one line is: “..and we are shelling out... bucketloads,...”

Which movie is “shell out” from?

The clip at the top of this page is from 24 Hour Party People (2002).

Phrasal verb

to pay a lot of money for sth

informal · Heard in 6 movies

shell out (for sth)
to pay a lot of money for sth
The band shelled out $100 000 for a mobile recording studio.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

..and we are shelling out... bucketloads,...

Said in 6 films · #1