Buy it from Amazon.com (U.S). It's $49 for a new copy + whatever the shipping is to Italy (which should be a darn sight less than £70).
To my knowledge, Titan Training was never released officially as an ebook. The story goes that Leo Costa sold up OTS to focus on becoming a golf coach (that's what I heard, anyway)..
He's since moved back into the fitness industry with a recently released book entitled Automatic Fitness, which is primarily a weight loss book aimed at general fitness enthusiasts as opposed to the bodybuilding set.
Thanks Roybot. I made good progress with BBB and wanted to have something else of that nature, so I can stick with what works. Will use some form of split in between as I need to bring chest up a bit (that responded the least on BBB).