A clarification also from my side. Just suppose that 2 put of 3 players simultaneously selected national as a secret action. Now which one is true:
1) all the players that has selected national will sell at 1 usd
2) the 1st player to select national sell at 3usd, and the other 2p sell for 1usd?
All players who selected national will sell at $ 1.
Also, take in account if a player decides not to sell (you are not obligated to execute the action), the price stays the same ($1).