I have a set from a company called protec-ear. They get you to go to an audiologist and have your ear moulded, then make custom attenuating plugs.
http://www.protecear.co.za/
I don't know how much those other ones are (they look great, btw) but these cost me about R700 including the moulding a few years ago.
I would recommend them to anyone. Plus, they're local, which is rad.