How much whould a train ticket from oxford to derby cost ? ty xx child's btw &retern?

Off peak child return �22.55, for travel in peak hours, an Anytime Child Return is �40. Through trains from Oxford to Derby 07 mins past hour, with change at Birmingham New Street 36 mins past the hour. Return through trains at 53 minutes past the hour (apparently no option to change at NS) a href="http://www.thetrainline.com" rel="nofollow"http://www.thetrainline.com/a