Anker has discounted the 737 Power Bank (PowerCore 24K) at its Amazon storefronts in countries including the US, the UK and Spain. According to the Amazon listing, the top deal offers 36% off the RRP in the UK. Features of the device include 140W charging via USB-C and an integrated display.https://www.notebookcheck.net/Anker-737-Power-Bank-PowerCore-24K-now-heavily-discounted.800494.0.html
It's been available for that price since start of December. It goes on sale ~2x a month.