My guess is that retailers won't carry it unless it's dirt cheap. If Williams made it the original way it would probably retail for $5 or $10 a puck, and a lot of long-time Williams customers remember when it was 19 cents a puck.
I'd pay full retail price for the original formulation because I have 4 late-19th Century to early 20th Century ads framed next to my strop and where I shave. I long for the connection to those ads because I'm a straight razor shaver.
I, too, can get modern Williams to work with some effort if I set my mind to it but that's not the point. The point is that this is not the Williams our forefathers used. It's an impostor. I don't know what my grandfathers used, but they passed away in the mid-1970s and if they used Williams, this isn't it.
I'm also put off that major American corporations take over traditional products and reduce the quality and variety of them. The best things I use either come from overseas or a small business that wasn't around back in the day. I'm grateful to these people but at the same time disappointed that I can't replicate my ancestors' shaving experiences to the extent I want to.