You can get a Joby strap, I think it's 35
Edit: here it is
http://www.amazon.com/Joby-UltraFit-Sling-Strap-DSLRs/dp/B0096JZRBI/ref=sr_1_1?ie=UTF8&qid=1379208383&sr=8-1&keywords=joby+strap