On the contrary. I have bought a dominant portion of my charts over the years used and out-of-date. Many (maybe all) shipping lines replace charts regularly with the latest and their discards are in perfect shape. A quick update from Notice to Mariners and they're definitely good enough for cruising sailors.I Don't think you will have any luck selling out of date charts if i were you i'd donate them to a Sailing school for training purposes
Unfortunately I have no need for the charts on offer here nor can I offer any advice on who in your area would buy them but I wonder how many cruisers always buy new charts.
There is and always has been a market for decent quality used (read out-of-date) charts