Hello, Anthony, sounds great and generous of you to create games for free for folks.
I have some black and white pieces but you can have a look at these on...
My website here [Link to portfolio]
and also I recent project I did for October which has 93 images made: [Link to space] though not black and white - it does have a ink / dry media technique.
My cost ranges depending on budget but in USD:
- $50 - $500+ depending on purpose and time.
Though it's not fixed at that; so I do work with creators depending on their budget and project context.
If that works or want to chat more, you can contact at tonytran.rpg@gmail.com
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All the best!
- Tony