By the end of 1941, the P.108B had demonstrated just 391 flying hours. Nonetheless, the new bomber showed much promise. The average Italian bomber cost around 2.1 million "lire", the SM.79 cost 1.7 million, while the P.108 cost 5.2 million. This would seem to favor the smaller bomber. But in a comparison to deliver a given weight of bombs at the same distance, the P.108B had the advantage. With a single squadron of nine P.108s capable of flying 1,100 km (700 mi) with 3,500 kg (7,700 lb), the estimated efficiency was comparable to a group of 26 SM.79s covering 1,000 km (620 mi) with 1,000 kg (2,200 lb). The total cost of each 'group' of aircraft required was about the same at 46.8 and 45.6 million "lire" respectively, but only 54 crew were required to man the P.108s compared to 130 required to man the SM.79s.