Yep, you can get a remote release with that connector on ebay for under $10 from China, that's what I did.
Try this:
http://www.ebay.com.au/itm/130461890...84.m1423.l2649
I've bought things from these guys before, always good. Beware shipping from China is erratic, sometimes three days, sometimes three weeks.
Cheers,
Jason.