Star Trek Online is free, has trading and crafting and tones more content then Eve-online although its a lot more casual and PvE focused then Eve. If solo/offline play is ok there are a lot of options that have not been listed. Is online a requirement?
No preference about online or offline.
Might try Star Trek Online in a bit.
I've had a quick go of X4 this afternoon... It's first person flying the ship which I didn't really want. Hired a bod to fly it, but now can't figure out how to do anything - undock etc..
Hmm.. I'm missing something obviously!