Not true! I sold most of my stuff for pennies on the dollar. I priced to sell and it did. Even total junk I never expected to sell went down the road. I actually gave a few things away too. Here’s a couple things I had; Small bolt axles with green bearings for $75, brand new Hughes RV cam and good used aluminum water pump for $100...
Worth it just to not have it anymore cluttering up my life.