How many shaves do you get from your soaps?

My Fear is that I fill my house with soaps - being a newbie I'm more software than hardware right now - so I'm alternating about 8 soaps and After Shaves.....my question and Ill post this somewhere is how long will a soap properly taken care of last before the scent or lather degrades.

https://youtu.be/vplpVVmzp3M

Leonard Ybarra did a few experiments with soap longevity where he actually used scales to weigh the lather he loaded in his brush. This video is using a softer Phoenix soap.
Hard soaps... Forget about ever finishing one THERES NO HOPE!

Like Hobbyist stated earlier, I too use about 1.5 to 2 grams of soap per shave, regardless of soap type. Just going by the 2 grams, a 4-ounce soap should then cover at least 55 shaves.