Here's another tip regarding the bee wax.
I never have much in my barn cause they take too much space. So what I do is keep the 3 of them and sell the rest at max price, and i rebuy some if I need it. It's as if I was stocking my wax at other players' places. And I do the same with all the items you can easily find in the newspapers or at my neighbors' markets, like the juices, baked potatoes, pizzas etc.. All those can easily be found at different market places, and most of the time for cheaper than what I had sold them, so I'm even making money from stocking at other people's places