This maybe of interest

[Malcolm1938]

I got an email this morning that highlighted a new line from 7dayshop.com.

Looks like a useful item at a very low price, link below, scroll down to find the size you would need.

http://www.7dayshop.com/catalog/default.php?filterwords=7dayshop+Lens+Filter+-+Variable+ND&x=0&y=0&filterwordsalldb=1&r=20110331-2

I dont work for them and have not tried this item ....

[Graham]

   Crossed polarisers?
                        Graham.

[Malcolm1938]

Probably but at least they have a scale on them to help get things consistent.

[michaelb104]

I've bitten the bullet and ordered one just to see what it is like.  I've looked at them before but they seemed to be really expensive.

I guess if it is rubbish there is always fleabay.

I'll post again when (if) it arrives and I've tried it.

[skellum]

I have a ND4 & ND8 from 7 day shop and both are ok. They claim they are manufactured by a company that supplies well known brands but don't say who exactly.
I am tempted to get one myself. ........

[jinky]

Just got my variable filter from 7 day shop with my Grand National winnings - knew I had it in the bag before I ordered it  .
Be a few days before I try it out I think but will let you know. There is a scale marked on it and feels like nice quality - will see how it shoots through it.

[skellum]

Took this shot today with my ND4 from 7 Day shop then decided to order a variable ND but 77mm are out of stock.

[jinky]

I must have got the last one