I see Carcano carbines all the time at gunshows and auction sites. Sell price is usually less than $200 "in realville".
Yes, I see people asking more for them and I wish them good luck. On a side note, I enjoy shooting the carcanos. The current 123gr PRVI ammo will shoot OK but groups are huge. These guns were designed to ammo of .268 diameter bullets and 160 grain which is hard to find and expensive. To get the most out of these old rifles reloading is a must. Grafs has .268/160 gr bullets and brass.