In a fixed-value model, the program publishes a constant conversion between currency and value, so a given number of points always buys a set amount off a purchase or a reward. The redemption path simply applies that constant. There is no demand-based computation, which means members can look at a balance and know its worth without checking a chart or a live price.
Consider a card program where points are worth a fixed amount each toward travel. A member with a known balance can calculate precisely how much travel it covers, and that certainty is often the program's main selling point. The member never has to worry that the currency will buy less on a busy date.
For an enterprise operator, fixed-value redemption builds trust because the currency behaves predictably, which encourages earning and reduces the resentment that dynamic pricing can provoke. The cost is flexibility: the program cannot flex point prices to protect margins during high demand, so it manages cost through earn rates and the reward catalog rather than through redemption pricing.