In early November I was able to go the the cashier's cage at the Tropicana in Las Vegas and purchase the four different $10 strikes they had available. Also, I've found that when playing a quarter silver strike machine I either win strikes right away or not at all. I've won most of them in under $10. I found out the hard (and expensive way) that if I don't win in $10 it's time to stop and try again another day if possible.