Hey ashlee, just Keep in mind one small issue can cause tens of thousands of snowballed knee jerk reaction mods so when you look at the big picture wether you pay 15k or 20k won't make much difference long term.
They are money pits so just be careful.
But they are very rewarding to drive.
Just make sure the person who looks at the car for you actually knows GTR's well and the issues they can have.