This thread is about putting a valuable loose coin at the end of a roll of coins, and then taking it out. Rest of the roll yielded a 1979-D with a pretty large MAD.
The OP is very young and likely just excited about his new(er) hobby. I highly doubt any harm was intended.
Yeah, you see stupid stuff on eBay all of the time... $600 for a VG at best 1919-S penny worth .40 cents at most, for example.