Lost small electric bike computer screen - $100 (downtown / civic / van ness)

I lost a 3 1/2 inch long, by 1 1/2 inch wide by 1/2 inch thick computer control screen (it is a small console for a Bionx Tern electric bike).
The word Bionx is on the screen.
I will pay $100 if it (the screen) actually works on my bike, which I would bring to a location (where I lost it) near Trader Joe's on 4th street, near Market, and exchange the screen/device for $100 cash, no questions asked.