Come to NYC
In NYC you can go to either Pasteur Pharmacy (on 34th street a couple blocks from Macy's) and/or C.O. Bigelow (in Greenwich Village).
Just do NOT come on Sunday or a holiday b/c Pasteur will likely be closed. Of course, you can always call. Pasteur is easily my first choice.
There are plenty of express buses that shuttle between Baltimore and NYC for ~$20-$25.
I think that AOS brushes will be too expensive. I have one and it is not my favorite.
I ain't as good as I once was...but I'm as good once as I ever was.