Ah, right. It's the big jars that are 175. I'm gonna say 18 months then.
The bowls are 175g right? Two years is possible, but I expect most people would get closer to one year out of it. A couple guys measured their usage in a thread awhile back, and I want to say it was around half a gram per.
Ya it is probably the most insane 3017 challenge out there, hands down. Who has what it takes to 3017 the biggest amount of an already super concentrated soap?