All of this is from a 2009 SRT8 challenger

No idea on price so I am just shooting.

Stock catback WITHOUT TIPS. I reused them. Took off 4.5 years ago, been sitting in my garage until last week when I organized. $200

Fresh off the engine OEM shorty headers just got long tubes. 1 of them both bolts got stuck. $150

SRT8 6.1 cam , 78,000 miles, car just came back with new cam, heads, headers etc. $75

Price does not reflect fees or shipping. No idea if there is a market for this stuff.