What he said right there ^ Always buy low and sell high

Buy many of the cheapest ones and then sell them slightly higher so you don't have any competition on the market. and if any of that item pops up on the market that's cheaper than your marketed items buy that too and sell it higher. that way people will only buy your things and you get a profit


If you decide to buy many many items and market them it helps to make a thread and post your deals on it so people can follow and see what is going on sale from your "shop"