With its finger always on the pulse on ways to save money, Martin Lewis's Money Saving Expert has identified how stockpiling one 68p item could reap rewards.
It has warned that the cost of stamps is set to rise from April 3, meaning there are just a few days left to bulk buy the commonly-used essential.
First-class stamps will rise from 95p up to £1.10 - a difference of 15p. The price of second-class stamps is also set to increase from 68p up to 75p - making for a 7p increase.