Anti-glare screen protector film sources?

I am looking for a screen protector for my medion and Road Angel satnavs -
most important it MUST be anti reflective as one unit I will be using
outdoors and the other I use in the car has a very shiny screen that acts as
a mirror and reflects badly.

There are some protectors that simply cover the screen and are still as
shiny, others are ridiculously expensive at £8-£10 per unit so I'm looking
at something reasonably priced that will do the job well.

Any suggested suppliers?

Thanks

In message GaoIj.27119$Ff4.22150@newsfe5-win.ntli.net,


BestSkinsEver.com (or something like that)
Not sure if they are anti-reflective, but a protective skin for my iPod cost
about $5 IIRC.
Should think a simple screen protector would certainly be no more than that.

--
Regards,
Chris.
(Remove Elvis's shoes to email me)