It's been 21 years since Amazon launched, revolutionising the way people shop online. But with a business model that uses subscription fees and dynamic pricing to prioritise low prices over high-speed shipping, is online shopping club Jet set to overthrow the e-commerce giant?

Mums are getting excited about flash sales site Zulily, and it’s not hard to see why. Constant discounts, 9,000 new items posted daily and ‘buy-it-now’ emails are selling them everything from yoga pants to fridge organisers, attracting four and a half million customers in five years. Will this success last?

No longer do we eagerly await the summer sale. Thanks to daily deals websites, online vouchers, and retailers’ desperation to sell, sell, sell, there's a sale nearly every day. But how does this permanent sale phenomenon affect the way people spend?

Having reshaped the British grocery landscape, discount supermarket Lidl has announced its first fashion line. As competition for ‘top UK supermarket’ steps up, is selling jeans next to the milk aisle now non-negotiable? And what does it say about our changing shopping habits?