Gift card trading scam: other $100 - impersonation

My Aunt and Uncle gave me this for birthday. My parents gave my sister a 200$ one and the numbers were also scratched out. My parents just lost 200$. People are assholes.The thing is they’re getting clever with it. So they take the front of the packaging, they get the numbers on the front and back, repackage it so it looks completely normal, then they put it back and wait for someone to purchase it so it can be activated. I don’t have a picture of how it looked before I opened it but it looked completely normal. My parents and aunt and uncle would not have purchased it if it looked tampered with.