You're only using one school as an example. My point is that charging different prices based on the opponent is standard practice, especially recently. It's that way for High School, College, and the Pros. If you didn't notice UL's football tickets were different prices for different games as well. LSU is a bad example as they don't need to raise more money from ticket sales. That's a luxury we don't have.
The main reason they are only selling to RCAF members is to keep the LSU fans and scalpers from getting tickets. That's also commonplace among college programs and a good idea. We don't want a sea of purple and gold at the Tigue.
I hear what you are saying about the loyal fans. As a loyal fan who isn't a big time donor I feel the same way at times. It ticks me off that I was one of only 2,000 people at games during the Baldwin Era but my New Orleans Bowl tickets were in the 600 level. I get it. But that's the price of success. There are thousands of loyal LSU fans who can't afford to go to games, or who get left out of things because they don't give enough. There are thousands of Alabama fans who show up to every sporting event but were passed over for national championship tickets because they didn't donate enough. That's just the way it is. A big, loyal fan base won't do much to get UL into a better conference. A bigger budget will. We need big donors more than we need loyal fans. Or better yet we need to do more to entice the loyal fans to become bigger donors. Giving priority to RCAF members is a great way to do this.