every once and a while some one will buy my SMUs, on libra, and try reselling them at 5-10 times the amount, then i put up another wave, i've got maybe 1M of those tucked away, my 0.7GC is locked, unless some one under cuts me. their have been a few sales to players that actually want them.
i've sold a few FMUs, and AFMUs, on ceti, but not even worth talking about. their is allot of potential with selling non-military goods, but the game itself would need to see a revival, with atleast 5 times the active players.
but regular stuff, like say jewerly, if you could buy that at half price on a space station, transport it to your country, your pop will pay you for it over time, reducing country costs, (kinda,) for half the GC value.
BQ has a really good idea with services, CL108 tried that a while ago with construction, but it never got off the ground. thats via direct trading, i'm a bit jealous that i did try that, but i hope it works out for her.