I am going to give you the low-down on shotshell reloading my friend.
I starting loading for shotguns back in 1977. These were the prices I encountered back then:
1977 Ammo:
Win AA Target Factory Loads, Box of 25 = $3.25 plus tax
1977 Components:
25 Lbs bag of shot = $8.00
100 No. 209 primers = $1.00
250 Wads = $5.00
1 Lb can 700x powder = $6.00
2012 Ammo:
Federal 1 1/8 oz promo loads, box of 25 at Walmart = $5.50
2012 Components:
25 Lbs bag of shot = $40.00
100 No. 209 primers = $3.00
250 Wads = $7.00
1 Lb can 700x powder = $12.00
The price of loaded 12 gauge ammunition, suitable for target shooting, has gone up 70 percent in the past 35 years.
The price of lead shot alone, has gone up 400 percent. Price of primers has increased 200 percent. Price of wads 100 percent. Etc. Etc.
I have 3 shotshell loading presses plus plenty of components. Guess what? I have not reloaded shotgun shells in the past 20 years. It's cheaper to buy the ammo from Walmart. Keep the hulls when you are done - and sell them to someone that doesn't understand basic math.
PS: I have friends that are serious trap and skeet shooters. They too used to reload back in the 1970s, and are the ones that got me into loading shotshells. These days they just buy a pallet of 12 gauge shells at the beginning of the target shooting season. They have stated that there is no advantage to loading their own shells anymore.