Overpriced cover charge

I went to this club when another club had closed. It was after 2am when I arrived. I chose this location because they were still open and the cover charge listed on this site was reasonable. I don't mind paying a cover charge (if there are dancers in the club) but when I got there, the person working the door told me the cover was $20. Even he admitted that it was ridiculous because he said that they were probably only going to be open for another half hour. According to this site, their hours are until 4am. The gentleman was nice enough and told me that if I come before 8pm there is never a cover charge. I guess the amount listed on this site is from after 8pm and before 2am. The club would have made more money with my two drinks and at least 1 dancer drink, and who knows how many dances before they closed. Maybe I was the only one and that's why they wanted to close early. I gave either ratings of 5 or unknown because I had to provide some answer, but I really don't have a good answer to the questions since I never made it past the door. I wanted to make this post so others are aware of the door fee prior to driving all the way to this location.