80% is right.
So I went to work trying to get the coins out.
1. Whacked it with a hammer., hardly made a mark.
2. Cut it with a jigsaw and then tried to split it with a chisel. I noticed that the plastic melted from the friction of the saw blade.
3. Low melting point?!?! so I apply a little heat...maybe it will melt. NOPE.
4. Apply more heat with small torch. IT CATCHES FIRE! I watch it for a minute and notice that it burns pretty clean so I let it go. 30 minutes later the case is gone and the coins are free.