Proaim shoulder mount?

[torrone]

Hi

Im thinking of buying a shouldermount and found a package on ebay (warning?), it is the Proaim shouldermount:
http://cgi.ebay.com/DSLR-rig-Should...862?pt=LH_DefaultDomain_0&hash=item256455ca26

Is this worth this price? Has anyone tryed out the Proaim?

My alternative would be a redrock micro shouldermount.
http://store.redrockmicro.com/Catalog/microShoulderMountRigs/microshoulderMountDeluxe

Im thankful for answers!