You can buy it here: worldwide
Since Dacii recently appeared on dvd... here's a trustworthy online shop from romania for you which has the movie and ships worldwide : http://www.dol.ro/produse/FIL4507ABA7B172A/Dacii%20%20%20Dacii%20DVD.htm
shareYes... Diverta OnLine provides it.
DOL provides also some other movies directed by Nicolaescu.
Enjoy