Jeremy, it sucks to see you contemplating selling the car. Soo much money, time, and such good parts into your build to see it go away. I understand people move on though. I could never see selling my car off. Been in it too long, too much money, and its just too much fun. It sucks to see one little thing take out your build.
BTW did you check your throttle body screw to see if it might have gotten sucked in causing the bent valve. Especially since its just one bent valve im thinking you sucked something up man. If so, dont let something so stupid get you down about it. Get it fixed and get it back out there and enjoy it again.
I would say for your car 8500-9k is a good starting point.