Even if you reload it's comparatively expensive because of the bullet weight, the bullet generally being the expensive part of the equation unless you cast. And even so, 180-240 grains burns up your lead a lot faster than 110-158.
I can buy great quality plated .357" bullets for ~6 cents apiece, with comparable .429" being 10 cents and much less available at that price level. As always with 44, it's only a great deal if you really need or value the additional power, even if you reload.
With my giant horde of 5.5 cent 9mm plated bullets, I load a box of really good quality 9mm optimized for my use and guns for just under $5. I do save more on the revolver cartridges, but am happy being able to shoot twice as much 9 on a given budget.