If you know anyone qualified for one, who doesn't have one, the cost goes from $10 to $80 on August 27. It was set at $10 in 1994.
They can be ordered online here for $20 until 8/27 (Extra $10 processing fee.) https://store.usgs.gov/senior-pass
It always puzzles me why they don't index prices like this to inflation. ...but then, $10 in 1994 would be under $17 today, according to this inflation calculator
. So that's almost a 5X jump in price over the original. What the????