I was looking for wireless shields for my arduino and stumbled across this http://www.kickstarter.com/projects/1608192864/open-source-wireless-inventors-shield-for-arduino
its a wireless shield for arduino that has 177meters range and is easy to program check out the link above for more info
its 30$ us dollars and you can buy it from herehttp://www.rfdigital.com/?targetpage=item&filterpn=rfd21815 but it doesnt start shipping untill august
just thought you guys might be interested