The Baltimore Catechism books are available from many sources - try Setonhome. They also have Eastern Catholic materials.
I agree with your point, though.
You wrote:
“I agree with your point, though.”
I promise you it’s a valid point that I have seen all over the Catholic publishing scene. Take Ignatius Press, for instance. Why are they dragging their feet on the Book of Revelation fascicle for the Ignatius Study Bible? It was supposed to be published MONTHS AGO. Also, they have yet again moved back the release date for the whole New Testament of the Ignatius Bible. What is even more frustrating is that they’re already DONE the Old Testament (or at least most of the Old Testament) according to one of the editors who I personally know (he too is very frustrated). Many of those books have been done for YEARS. The current master plan of Ignatius Press is to release the New Testament in the Fall, but to publish the Old Testament in chunks over the next two or three (means it will be five or six!) years.
So, while Protestants got the ESV Study Bible (something very similar to the Ignatius Study Bible is size and scope) in one chunk and at one time, we are being nickled and dimed over and over again. I understand they make money doing this that they can channel right back into the production of the Bible, but come on!