I have seen it pretty much in every WD40 type shop that I would expect to find it in (Toom,
OBI etc...)
Very handy stuff indeed when used for the right thing

Repels water (works a treat on old manky Mini distributors - for a while - as a quick get you home fix), nice for cleaning gunky stuff off, stopping rusting and loosening stuff etc.. like it says on the tin (I believe).
Dont use it too much as a lubricant tho.. can work ok as one for some things but not the best for heavy duty lubrication IME.