Granted they're not signed (you probably guessed that), but the Warhol: Limited Editions screenprints are official prints – and they are discounted right now at Achica.
Take your pick from several colour and theme variations of the images you see here, with multiple colours of Marilyn, Mao and Flowers, plus a variety of flavours for the Campbell's soup cans (which we're already considering for our kitchen).
As for the prints themselves, each one is from an edition published by Swiss publisher Sunday B Morning, the publisher Warhol authorised to print his art, with each taken from the original edition of 250 and with the publishers mark in verso. Note that the prints are unframed and do come with a certificate of authenticity.
If you want one, prices start at £395, which is considerably down on the list price.