If I don't have time, what's the quickest way to get the most back from selling my stuff pre loved ?

I usually sell my items in some mummies' or babies' fb groups, and also carousell. I wouldn't say I can get back most from selling the preloved items but probably I can get back some rather than nothing at all. It also depends on the condition, the dealing places and the rarity of the items. You can command a higher asking price if the above are in excellent condition with convenient places.