CPL filter for Cokin P series

Hi all,

With a tight bidget I have gone for a set P series (instead of the Lee's kit which I really admire).

Currently possess of 67mm and 77mm ring, a Cokin wideangle holder, a normal Cokin holder, a cokin ND8, and a set of "Fotobetterway (aka no-name)" ND Grad filter set (Hard ND Grad 2/4/8)

One of the reason I go for the Cokin is because the Lee's only cheap in USA and alikes, and shipping to Australia is very, very expensive.

Anyway, its time for me to go for a CPL. I did a search on ebay but there'er bunch of knock-offs without any geniue CPL filter.

So I like to ask are those ebay one are Okay? Or I better off with something else? I have asked the local shops here on the price of Cokin CPL but they are quite expensive (AUD$140+)

Any recommendation/comment would really apperciated.

Get a circular (screw-in) polarizing filter, not a rectangular. Go for B+W MRC, Hoya S-HMC or HD, or Heliopan SH-PMC. You might check Maxsaver for pricing - they'
re in Hong Kong, so shipping should be better for you as well.