Is it worth it? My answer is if you are not reloading you are not shooting enough.
i just tried pricing some supplies from midwayusa (which i will admit typically sucks at prices), but its a ballpark...
Costs for .40S&W:
Brass $60/1000
Bullets $100/1000
Primers $30/1000 + $27 hazmat fee
Powder $25/8lb (not sure how many rounds this feeds) +$27 hazmat fee + seperate s/h fee
i'm not sure whether the two hazmat fees are combined if into one order, but the way i understood it, the primers/powder are shipped seperate, and are charged a seperate s/h fee.
so I was looking at:
$215 parts
+$27 hazmat fee (i'll assume once)
+$10 s/h fee for the hazmat stuff
+$X s/h fee for the other parts (didn't care at this point)
so i'm looking at $250+ in parts before even adding the s/h fee for the non hazmat parts.
granted, some of that will be reduced a bit if i stock pile large quantities, but even then, its not exactly half price.
a TYPICAL place will sell remanufactured .40s&w ammo for about $260/$270 (luckygunner) +s/h, although you can find sales for much less (jackrossammo $211 shipped)
so in the .40s&w caliber, even being bored as hell wouldn't make any sense for me to go this route. AND stockpile explosive powder, AND stockpile explosive primers, AND buy a $400+ good rig, AND give up the most precious thing of all: time. which i'd rather spend either with the family, doing house projects/chores (well, not really, but they do need to be done), or at the range.
i'm guessing in the .45+ calibers things start to make a bit of difference. and especially so in the rifle calibers.