Young man! Consider this a life learning experience you'll never forget. A bummer but rest assured, we've all been there and done that. Wisdom and PATIENCE Comes with age and experience. Mine? Well, not the only one but I bought two muskets for $50. One flintlock and one percussion. I knew what they were (revolutionary and civil war era) but did not research them and took them to a gun show and sold them both for $1k - money I needed to purchase a truck. I imagine the dealer that bought them got a lot more.
Patience, patience, patience.