Adding to my original message, when I enable the “Force [All Products] Products Call For Price” option, I do get the correct presentation of “Call For Price.”
Also, when I use the taxonomy method, I see the proper presentation, with “Call For Price” overriding all pricing on all products within the category.
My biggest issue is that I cannot get the “Call For Price” option to show on single products that have a null price field.
I should have explained a bit further. I also see the message: “Your currently plan subscription is inactive. Please activate your plan subscription from here.”
My subscription does appear to be active—at least it does on the Eniture website.