What are these items worth? Bird owners!

[Lenie]

Hope this is under the right forum, but I'd like to hear your input.
During my build, I have left over parts and would like to know what you guys believe there worth, contemplating putting on craigslist to avoid shipping hassels. Keep in mind, I'm not greedy.
1. Original 68 firebird 400 fenders, acid dipped, one small patch on each fender, then lead repaired and e-coated.
2. Front 68 firebird 400 bumper rechromed but been sitting in dry storage for about 6 years. I'm no expert, but I'd call the chrome job just alittle better than driver quality, but straight.
3. Rear bumper same as front bumper in quality.
4. Rear original bumper brackets, pitting through the years, not bad, then acid dipped and e-coated also.
5. I don't even know what this piece is, maybe you could tell me. It's new still in plastic, but I'm not going to use it in my build, came with the car.
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[Lenie]

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[Mrfixit]

According to the part number, it's a spoiler for a 69 Firebird. Year One on-line lists it for $55.