20L of London Fine Soaps Azul Bactericidal Hand Wash. £26 delivered @ Amazon. Cheap - 32.5p/250ml

Ordered 2 x (2 x 5L) for £26 to avoid shipping cost.
Prime can order just 10L for £13.
I use soap dispensers and found it irritating having to decant out of Carex bottles etc and there was always wastage each time. There should be less wastage using these large commercial size refill bottles.

On average it's 50p-£1 per 250ml for good hand wash in the supermarket so this is a clear money saver in comparison and it appears to be a decent quality one with a pineapple, orange, lime fragrance which sounds delightful. No reviews on Amazon yet.

Expect this to go cold but if it helps open just one persons eyes to the convenience and cost benefits then job done.