Glad you chimed in...
tickets are $10, $20, & $40, depending on where you want to sit, and on ticket availability- plus, you must be an NRA member.
NRA membership:
https://joinnra.nra.org/join/join.aspx
1 year- $40
2 years- $75
3 years- $100
5 years- $140
Louisville Event seating info:
Wonder if the event will be on C Span !