What gifts that you received for Christmas this year are already in the trash?
For me, there were several dollar store trinkets that already broke, and one toy for my kids that was a huge sparkly styrofoam mess waiting to happen, so I threw it out rather than curse anyone else with it.
It's a made-up story. Depleted uranium is a byproduct of uranium enrichment and places that do uranium enrichment aren't even going to talk to you unless you have a host of government licenses. Depleted uranium only has a few applications like:
Armor penetrating munitions
Counterweights for aeronautics
Ironically, as radiation shielding
This makes it very hard for collectors to obtain (it can take people years) and actual samples of DU are going to be more expense than regular uranium. The story makes as much sense as your grandmother buying cubic zirconia jewelry and being "scammed" with actual diamonds.