Do NOT use any metal tools on this gun. You have told us already that you are not a gun enthusiast and we can assume from that you do not have the interest to assemble the proper tools to remove the lead balls and what is probably, surely, powder in the chambers.
I think it would be dangerous for you, with no experience, and with no will, desire, or interest in learning how to unload this FIREARM.
Any spark, near the chamber throats, or near the nipples that have no caps on them can set the powder off in the chambers. Even smoking a cigarette and carelessly flicking an ash and having a cinder land on the gun could set the powder off.
If you removed the cylinder and broke the gun down, you could take it to a dealer and try to sell it, but he's going to discount the gun a great deal as it is dirty and most importantly, it's loaded.
If you take it to the police to get your $100 dollars, and the laws in your town make the possession of powder illegal, I'd say you stand a good chance of getting arressted for possessing the powder ... it's risky.
I'd suggest finding somebody who you know and trust who knows guns and discussing what to do with them.
Removing the lead balls from the chambers takes some doing and you must take care while you are doing this. Following basic gun safety rules while you are doing this is essential and you have to learn those.
Old Timers here and hotshots alike would say this is easy, it's simple. But for somebody with no desire to learn how, and no knowledge, it can be dangerous.
There are people who visit this forum who are missing fingers and have very bad scars and injuries from this hobby, so to just dismiss this is easy is foolish.
Again, I say seek out somebody you TRUST. If you know a veteran of a war, Iraq, Afghanistan, Vietnam or Korea go to them and ask them what you might do. They might be able to help.
And we will all be glad to continue to help you. Remember, no smoking around that gun.