It would be nice if the player could boost a merchant's worth by selling them lots of valuable stuff that they can turn a huge profit on. Say, for example, I only sold fully repaired weapons/armor to Moira. She could then turn around and make a bloody killing selling those items for a profit. After a couple of weeks I would notice she would have a very much higher cap count. I could then sell even more valuable stuff to her. Conversely, if I sell her utter crap, it would be expected that she barely break even because everyone and their uncle is also selling utter crap, so I wouldn't notice an increase in her net worth.
This IS what I was talking about, and what I don't want. Im only bringing this topic back to life just to point this out. since most people did not read my op carefully enough to understand that I DO realize that merchant cash in previous fallout games comes back to their normal amount after a couple of days.
What I DONT want is a dynamic merchant economy, because it would mean that eventually they would have lower and lower total cash (even after it regenerates ie. merchant had 1000 caps, sell bunch of crap till its 0, come back a few days later when its regenerated and its only 200 caps)
I don't care if its realistic, since when does reality have any thing to do with Rpgs. Either way, this topic was dead but I had to bring it back just once so that I could make this point. sorry.