.44 Special and Magnum seem to be two of the pricier calibers sold these days. My buddy recently bought 50 Winchester white box .44 Magnum 240gr JHP rounds for $34.97 at Wal-Mart to try in his new S&W 329 revolver. That's about 70 cents each (ouch!). Additionally, there are very few non-wimpy .44 Special loads out there, and the robust ones are expensive.
If I only reloaded for my .44 Specials and Magnums, it would be worth it. Jacketed bullets are up to about 20 cents apiece, but you can still find lead bullets for around 10 cents each. Throw in a 2 cent primer, 3 cents of powder, and amortize your brass at about a penny a shot, and you're talking 16 cents for a lead bullet round and 26 cents for a jacketed bullet round. That means you save 44 cents every time you pull the trigger on a jacketed .44 Magnum round, and 54 cents for every lead bullet round (POW! "I just saved 50 cents." POW! "I just saved 50 cents", repeat as necessary).
As one example, if you wanted to shoot your .44 Magnum every other week for 2 years, and only shot 50 rounds of WWB each trip to the range, you'd spend over $1800 for the privilege. But instead you pay $800 for a VERY NICE reloading setup, and $1000 for your initial large buy of powder, primers, bullets, and brass. After those first two years, you're paying only for primers, bullets, and powder (and occasionally for brass). The savings add up over time (because you've already paid for the reloading hardware), allowing you to shoot a lot more for the same or less money. Plus I find reloading to be an enjoyable hobby in its own right..