FYI, Ladies Night at bars where ladies pay less has been ruled a problem in several states, but not all where it has been brought to the courts...
A ladies' night is a promotional event, often at a bar or nightclub, where female patrons pay less than male patrons for the cover charge or drinks. State courts in California, Maryland, Pennsylvania and Wisconsin have ruled that ladies' night discounts are unlawful gender discrimination under state or local statutes. However, courts in Illinois, Minnesota, and Washington have rejected a variety of challenges to such discounts.
Note that the gun range in question is in a different county that the Maryland lawsuit on ladies night was held.
I am still not sure where paying $15 (his injury for having to pay when the ladies did not) constitutes received $200K, the amount of the suit. I am thinking he gets his $15, interest, and legal fees back, at most.