Harder Barter - Expensive Prices

Introduction:

Bethesda games in general tend to give way too much money in my opinion, rewards are plentiful, prices are low, everyone's happy, right? Well, I'm not, I like the challenge of not having money all the time to afford everything that I want, I like perks like Cap Collector and Fortune Finder having longer lasting impact in my game, and I like feeling like I earned my inventory, either by exploring, killing, or paying for it. What good is it Cap Collector if I'm getting better prices but I'm swimming in caps already to a point that even without that perk everything is affordable? What good is Fortune Finder if I'm finding a few extra caps here and there if they mean squat when I get them because I was already rich?

I play with mods like Loot Balance which make the Wasteland loot feel scarcer, every stimpak I find is pure gold and any amount of ammo is welcomed, but all of a sudden I go to a Vendor and the prices don't reflect a world in which goods are a comodity. Making the decision of buying that extra clip of ammo or buying some RadAway should be important, but it doesn't feel like that because of the amount of caps we get and the prices vendors have (and to a certain extent because of their inventories as well, but I kind of like traders having good things and charging an arm and a leg for them, if you want them... then empty your pockets vault dweller). Obviously this mod won't be for everyone, but if you are like me and enjoy the challenge of a harder game economy, you might find it useful.

I had been looking for a mod that just tweaks the game economy globally, without being part of a huge overhaul mod that does 20 other things that I'm not interested in, but the few I found either didn't offer any information as to how exactly their changes worked (most seemed to tweak fBarterMax, fBarterMin, fBarterBuyMax and fBarterSellMax settings without explaining why or how), or the little information they did offer wasn't enough for me to fully understand their impact on the game prices to make an informed decision on which one to install. I just wanted one simple mod to change the economy and nothing else and I couldn't find one to my liking so I made this one. :)

I actually tried to make a mod like this a couple of years ago but back then I didn't quite understand exactly how Fallout 4 calculates prices and I guess this time I put in the time to learn that. The Fallout 4 wiki has some info and one formula to calculate buying or selling price modifiers (but not final prices) but it's not very clear other than to understand that yes, CHARISMA plays a role on prices, and the higher your CHA the better prices you'll get basically.

I ended up having to sit down and break the few formulas I found online down to get to the bottom of those settings, and I ended up rewri