If you look back one page of this thread, I lay it all out for someone there:
$30 gets you the games (single player: Squadron 42 and mp: Star Citizen), a ship (Aurora), some money, and a hangar.
If you want Beta access, then you need to spend $5 more (Aurora ES I believe).
If you want dogfighting now, then $5 more for an AC pass.
So $40 for beta access and fighting today. Or $30 if you just want in today but don't care about beta and dogfighting.
And to add to above: Aurora is an all-purpose vehicle. If you want to pew-pew, then spend the $50 on the Mustang. But if you're more interested in commerce or don't know what the hell you want to do until things go live.....Aurora would be a good choice.