I bought myself a medium agenda over a decade ago and have never used it. It's sitting in a drawer making me feel bad that it goes unused. If I get it out and force myself to use it, I feel like it would be a waste. I'm sure that there is a more worthy home out there in the wild. What are the prices like for these now? Should I keep it in mint condition hoping to make more money in the future? Do these kinds of things increase in value over time? Does the chance of resale influence the items you buy?