As if everyone wasn't picking up enough bargains, there's another nice freebie for commuters on Cyber Monday too.
It's the second week of a month-long offer in which Mastercard holders using Apple Pay will be able to tap in and tap out absolutely free across the capital's Tube, trains, trams, DLR and buses.
How do you get the bargain? Simply swipe in and out with an iPhone or Apple Watch that's connected with MasterCard and the cost of the ride will be automatically refunded(up to £27.90. There are some limits).
More than 220m journeys were made via contactless over the last year and Mastercard is offering the promo to encourage even more users on board with it, and particularly with the recently launched Apple Pay.
Read more: Where can I use Apple Pay in the UK?
We're a nation that embraces contactless pay, and London's black cabs are the latest to jump on board. Travellers in London will be able to use card, contactless on cash in any taxi in the capital by October next year (right now, it's optional).
Meanwhile, the race is on to launch contactless pay devices, with Swatch the latest to step into the ring with a pay-by-wrist watch (but it's not a smartwatch).