Whoo - fellow souls on the forum

TBS is a solution agreed. It is expensive. Top range animation programs in general are a solution - they are all expensive - some you need a mortgage for.
Not a route a creator of non-animated catroons can necessarily take.

I draw strip cartoons - I pencil them - I ink them by hand in the traditional way with a pen, or with hard black pencil [eg caran d'ache prismalo].
I scan them, if I need vector I vectorise them with inkscape or vectormagic.

Not an idea solution either.

Xara will need more than an eraser for this - its all in the character of the line for me.