After reading the title I am tempted to say, "what economy?"
Recently, I have managed to get my Ranger to level 20, a Vialto Launcher to level 40, and a Foursis rifle to level 37. I also upgraded 3 of the unique red-box Qual De units to an average of level 20. All of that has pretty much cost me every N-meseta I have earned. There is nothing left to buy fodder from the market. In fact most of my loot has been "converted to cash," because I'm perpetually broke. The daily and weekly mission pay just goes straight to the upgrade shop.
Since I really want to play Techter for a while, I bought a Resurgir Wand and Wire from the market in preparation. But after the purchase I found out I don't have enough cash to fuse them into a multiweapon like I wanted to. So I feel stuck with my old PSO equipment and the fresh Vialto Talis that I found as loot at least until I get paid my next weekly. But that is the only thing on the market that I found worth buying with my limited N-meseta. In fact, my weapon and unit grinding looks like it's on pause for the next week since I really want that multiweapon and that's the only way I can afford it.
Before we can buy stuff on the player shops, we need N-meseta to buy that stuff with. So, beyond the daily and weekly missions, how do we earn it? If you tell me I need premium to sell to the market then I am not listening. Any other ideas?