Most of the $680 was on computer hardware to get up to snuff with playing the game. I bought a MB, Ram, and an AMD 8350 processor. I was blue screening at times so I bought a liquid cooler for the processor. That's about $445 for those items. Some other costs are a case which I owe a good friend for but he won't take my money, and at least $10 worth of goodwill joysticks.
As far as SC I bought the Freelancer physical package, an Aurora for one of my sons, and a centurion subscription. I am likely to buy an Avenger before it's all said and done. I have two sons so I will probably need to buy him something at one point but he didn't ask for a make believe digital spaceship for Christmas .
I'm very excited for this game. I had begun the process of designing one like it many times since playing privateer in the 1990s. I am over joyed to be able to focus on playing the game. I never wanted to make it, only play it. I can only imagine what it would have cost me if this hadn't come along and I had ever gotten anywhere with that project. Much more in time and money and while it may have been an Ok game someday, it wouldn't have been Star Citizen in scope or quality obviously.
Star Citizen has all the Assets I would need to build what I had in mind only better. If I win the lottery and have some time maybe I'll make a personal server customized to what I had in mind. I really wouldn't be changing a whole lot.