[NotMyWay]

I would try to do both.

The reason for this is quite simple. Suppose you set up a store selling only elrues, maybe people would find it convinient that you are selling elrues, and buy your elrues to upgrade their items. Suppose u sell only power scrolls, players may occasionally buy your power scrolls before training. But suppose you sell both, its possible that they same person who bought ur elrues will also buy ur power scrolls. (btw, power scrolls actually increase aim and not power, i have tested them.) Of course its also recommended that you check what others in the area you plan to vend are selling, and try to sell different items.

If i remember correctlly, "The law of dimishing marginal returns states that for every additional unit of an item produced, u get decreasing returns". I wonder if it applies to fiesta...