Hi, Fabio. I've got L&R ailerons, L&R fuel tanks, L&R elevators/horizontal stabs ( with trim tab) and a nose gear fork from a C 150G.
Ailerons: $200 each. Fuel tanks (13gal.) $75 each. Elevators $100 each. Nose gear fork $50.
If you're interested in any of the above, I can get a packing/ shipping estimate for you.