The economy / industry aspect of the game is unparalleled. Many consider it a very strong, but passive, form of pvp, due to competitive aspect of it.
Here's a great poster / flowchart for "
what there is to do" in Eve
"I'm going to try the trial, and if I like it I might consider playing it for ahwile but how much does it cost? I didn't see any prices."
Pretty sure the standard monthly is 15 dollars, not positive though. There are multiple ways to pay for your subscription, and I am one of the many who haven't actually paid RL currency for my sub in years. I pay using in game currency (isk) - you can either buy PLEX or game time codes (GTCs) from other players. It's not cheap, but once you get good at making money, that's basically how I play the game. I fiddle around, doing stuff I find at least somewhat entertaining, and pay for my sub that way =)