What's an example of Fasaeconomics?
Let's see, for starters inflation. It doesn't exist. Okay, so a C-Bill isn't fiat, it represents a millisecond of interstellar communications, but still it's odd that it keeps the exact same value (10-11 dollars US) throughout several hundred years. And nothing changes in price. The first Extralight Fusion Engine ever made cost 4 times what a normal engine did. Five hundred years later when the technology is well developed and found across thousands of worlds, one of the thousands of XL engines coming off a mass-production line has the exact same price as the first handcrafted experimental one.
The biggest one is interstellar shipping. Simply put the entire Inner Sphere, something like 2,000 planets, have less shipping than Michigan. By that I mean both the military and civilian fleets of all the major nations, combined, are probably less total tonnage than the various barges hauling goods along the Great Lakes. It's absurd how little there is and yet it's enough that they have ships dedicated to stuff like being luxury yachts (Princess Class) and cruise ships (Monarch Class). Somehow there's enough shipping left over for dirtbag mercenary companies to afford transport all over the inner sphere to go fight each other. Now you might be thinking that this just means most planets are self sufficient, but we're flat out told most of them are agrarian worlds growing food and utterly dependent on imports for everything else.
On top of that when you do the math, the ships aren't capable of paying for themselves. They cost so much to make and it costs so much to jump that they can't possibly haul enough cargo to pay for their own operation. With even the slightest logical economics applied to the rules for how much ships cost vs. what they can haul, it's clear all ships in the Inner Sphere are losing money with every jump.
Pay scales and dollar amounts also make very little sense. Let's go back to that dirtbag mercenary company. They're poor as church mice so they have a single lance of 'mechs, we'll assume a standard lance of 1 light, 2 medium, and 1 heavy and using late succession war tech. I rolled up a random lance of common 'mechs in MegaMek:
1
Wasp 1A 1,881,900 C-Bills
1
Wolverine 6R 4,302,244 C-bills
1
Shadowhawk 2H 4,424,600 C-bills
1
Warhammer 6R 5,306,244 C-bills
So here we've got four fairly basic 'mechs and they add up to 15,914,988 C-bills worth of stuff, or over 150 million dollars in real money. This is for some dirtbag poor guys remember, a typical mercenary group. Add in their cheap-ass
Leopard DropShip for a cool 171 million more C-Bills if you like, not all mercs have it but the dirt poor group you play in the Battletech Videogame have one.
Piloting these immense war machines are, of course, Mechwarriors, the Elite of the Elite, the finest soldiers in the universe. So how much do they make for risking such a stupendous amount of hardware and being so amazingly skilled? A MechWarrior's base wages are 13,000 C-Bills a year. Yeah.
And their expected contract pay reflects said wages, somehow nobody pays anything but dirt-poor wages to these mercs so you have groups like the team in the aforementioned Battletech game barely having eating money and worrying about making ends meet while flying around with equipment worth more than the Gross National Product of many first-world nations.
It gets even worse once you dig deeper into the rules. For instance weapon pods can be switched between omnimechs, but how much the pod costs depends on the weight of the 'mech it's in so the inflexible C-Bill value of an item changes when you put it off one 'mech and install it on another.
