65 Barracuda part out selling questions

As for pricing it depends on condition - anything with good shiny chrome; bumpers & tail lights, could be worth $100 each maybe a bit more.
As mentioned some interior pieces usually sell well but I’m not sure what a good price is.
If I were you I would be happy to get the rear axle and I would just sell the whole car.
You might want to sell a few items that are easy to remove and ship but otherwise just let it go.