Do certain converse styles stop being sold eventually?

I found some really awesome converse a couple of months back and I've been waiting for my birthday so I can buy them with my own cash. ( a href="http://www.schuh.co.uk/images/product/192231/1922317070_exlg.jpg" rel="nofollow"http://www.schuh.co.uk/images/product/19…/a ) Now when I look in the converse store I can't see them? (they're called rock music words). Do they stop being sold after a certain amount of time or something?