Some things you can list for peanuts and still won't sell even if they're worth double or more of that price. If it's not an in demand item like a computer part or some electronic device they can sit there being listed for weeks/months and get little to no views and no buyers. The odd item might go, but overall it's a PITA to sell now.

Must be a combination of people not having money, not using eBay, and item visibility being poor.. Better off saving the hassle and giving them away to a charity shop, or car boot sale, it's very annoying to list an item when you want to clear out and it just sits there getting almost no views or interest whatsoever.