I didn't buy
today but Mr Postman delivered the following today:
Neweer ND Fader Filter ND2 - ND400 77mm
52mm to 77mm step up ring
77mm lens cap!
I'm assuming that this £12 variable ND filter isn't going to be anywhere near as good a quality compared to a Lee Big Stopper, however it is a darned sight cheaper.
My plan is to use it with my Sigma 10-20mm lens, and the 52mm-72mm step up ring means I can also use it on my Pentax 18-55mm kit lens.
Just need some dry weather to try out milky water shots down the coast.....