It is very helpful to replace the hoses and other items regularly, Doing so every 3 or 4 months helps my CPAP work better, and I like the setup pack for this. On the other hand, since I know my pillow size, why not let us order a replacement pack which includes only the pillow size needed? The current package has the small, medium, and large pillows, but having all three sizes means we must pay for something we do not need. This is a waste. Separately, each pillow costs around $25, so how about having a single pillow of the right size at lower total package cost, or including three pillows only of the correct size at the current price?