Online mega-shop Amazon is offering a bunch of special deals today, including some big discounts on cycling and fitness gear — but only for people who've signed up for the Amazon Prime service. Here's how to take advantage without getting lumbered with the £79 Prime annual fee.

There are upcoming deals on fitness bands, iPhone heart rate monitors, bike lights, GPS watches, track pumps and more.

Amazon is doing this in the hope that people will sign up for Prime intending to cancel after the 28-day trial period, but forget. It's the same idea as gym membership: many join and pay the monthly fee, few actually get on the weights machines or do the classes more than a handful of times.

We suggest you enjoy the things Prime offers — deals, free next-day delivery, movies and other video on demand — for four weeks but set an alarm on your phone and on-line calendar or even in one of those paper things some folks still use to remind yourself to cancel.

It's also a good way to help keep road.cc going. We get a bung for everyone who signs up by following this link, even if they cancel, so it won't cost you anything.