In agreement with cletis, and as an additional suggestion: the shipping costs would be high if you tried to sell/ship. You could bring the heavy/messy (or heavy/cleaned) parts to a swap meet at a truck show and maybe sell axle, wheels, rims, brake parts (if they are usable).
Also, it is hard to suggest prices without knowing condition. Usable axle and wheels and drums/brake-parts only have any non-scrap value if they are usable. It would take a desperate person to buy those parts sight-unseen.
Good/clean wheels/rims might sell @$20-$50, depending on condition and whether they can be picked-up or have to be shipped.