Online retail giant Amazon have given the go ahead for vendors on their site to offer the best prices,out of all sites they inhabit.

Amazon say that selling merchants must make their goods available, at a lower or equal price compared to the same item they list, elsewhere, with other online retailers.

As of the last day of March, sellers have to guarantee that the sum price for an item listed on Amazon is the best value non-physical listing, available.

The site regard non-physical channels as online shops, mobile phone apps, mail order catalogues and other listings platforms such as eBay.

Sellers have until May the 1st to make changes to their pricings list.