Businesses that refurbish and re-sell these items take storage space, time to sell and consumer demand into consideration before offering to purchase.
People who see these items think they are neat and may think about having them for themselves but when they start thinking about where they would keep it and their usefulness and practicality they have second thoughts about buying them.
I still think eventually I will find someone who will value items such as these and will appreciate me letting them know about them and having my clients make some money by selling them. If you know of someone who appreciates items such as these please let me know.