My next door neighbor just finish is puck of modern Williams and it last him almost 8 months. Knowing that he shave only whit that soap but knowing that he shave only every 3 days or so. He also used the same brush and same method(bowl lathering), i’ve Decided to test it myself by using the same brush and same method like him. The only difference that me i’m A daily shaver(everyday shaver), I will test to see how long a puck would last me. It’s been already 6 days today and I will post my result after the puck will be gone, so I will excluvelly use modern Williams until it will be done.