Thought I would share this in case it helps anyone. I recently purchased the following:
Hoya 72mm PRO1 DIGITAL Circular Polarizer Filter
Hoya 77mm PRO1 DIGITAL Circular Polarizer Filter
Hoya 52mm PRO1 DIGITAL Circular Polarizer Filter
And with shipping to me in Canada, the grand total was $179.05 US. I thought this was a great deal! The company is based in Canada, ships from HK. I ordered on July 2, it shipped on July 5, and I got it on July 13. Got email with tracking info etc.
B+W/Hoya/Kenko filter, Photography Accessory www.hvStar.com (MaxSaver, BestEastern, hkDirect, hvPhoto)
They have lots of other stuff too, of course. I found them on ebay, was the only place I found that had all 3 of the sizes I needed in stock. And the prices were great.
ebay personas seem to be besteastern, hvphoto, among others, but it seemed I got a bit better of a deal buying direct.
oh and I got a free lens pen too!
(it was my first 'ships from HK' type of purchase...and while I normally shop as close to home as possible and was a bit nervous about it, it was a great experience and I would use them again!)