I bought some Williams, off of Amazon 11 years ago, for $3 a puck. That was expensive, back then. Now the want $48 for 1 puck. So, I would say Williams is . ARKO has gone up a couple of dollars, at $14 for a case of 12.
Eh, I've had my one last puck of Williams in the rotation for about three years now. It's been in my stash for over a decade and is now essentially odourless. For whatever reason, it's yielding better lather than ever before--but when it's gone, I won't miss it. If I ever get my hands on some Arko, I'll probably let it likewise hibernate for a while.