I expect to make hardcopy (paperback) versions for Volume 1 and Volume 2 of Symbolic Logic available soon through Amazon Direct Printing (at the minimum allowable Amazon price, around $10.00/volume). Printing requires significant formatting improvements (for example, I am now staying entirely within the margins). But I have been making good progress, and expect the hardcopy versions to be available sometime in early 2023.
The .pdf download will remain free on the website. However, I do recommend working from a hardcopy and so hope a printed version will be useful to many readers.