Prices are not necessarily always consistent for several reasons.
Firstly, Back Market is a marketplace, not a seller. Sellers offering devices for sale on Back Market set their own prices freely for each product.
Also, our algorithm only shows you the very best value in terms of price and quality for each particular device configuration (i.e. model, storage, color, condition). Furthermore, our aesthetic chart can also influence the price of products significantly - as a result, you'll see a price difference between each aesthetic grade for the same product.