I have noted that many people have shown interest in purchasing posters featured on this site, but have assumed that they are not available for sale.
In some instances, these posters are, in fact, available for purchase from the designer or a store, but in other cases they are not. You cannot directly purchase prints from this site.
To find out if the poster you want can be bought online, I have provided a link to a useful site on the artist’s name in the caption found under each poster (usually a link to the artist’s email, website, flickr, tumblr, deviantart account, behance page or an online store). In most cases this link will take you to a site where you may either purchase the poster or contact the artist. You may have to do a little extra research (probably just a google search) on the artist if the link I have provided is not very helpful (I do try my best, though!).
Keep in mind that not every poster may be available for purchase, but a great many are.
Hope this helps you out!