Complex sentence: During a running battle with the Italian police, the magazine reached a circulation of 450,000 in less than four years from it inception in 1967, selling then at about the equivalent of a US dollar per copy.
Split into simpler sentences: During a running battle with the Italian police, the magazine reached a circulation of 450,000 in within four years of its 1967 inception. It sold at about the equivalent of a US dollar per copy.