make, lose, spend, etc. a packet
make a packet
To make a very large amount of money, especially by doing something very successfully. We'll make a packet if we can manage to secure a trading partner in China. I hear Sarah is making a packet with sales from her latest novel.
make, lose, spend, etc. a ˈpacket(informal) make, etc. a large amount of money: He went to the USA and made a packet in office property. ♢ We spent a packet on our weekend away — everything was so expensive.
See also: packet