STUMP, I was hoping you would have got an educated reply by now. Since you haven't, here is mine instead.
I got a Lee Load All for Christmas, waited for deer season to end to start looking at it.
I haven't done any hard math on it, but just looking at component prices, it would seem that, for 6-10 boxes a years, it would not be worth it, considering that Rem Heavy Dove goes on sale at Academy sometime around dove season, and Estates are $ 4.99 a box.
I think the reason to reload shotshells is the same as reloading for rifles; either high volume shooting, or to make something you can't buy. My plan is to make some lite 20 ga 3/4 or 5/8 oz loads for my wife to try on clays, and some 12 ga 3" 1-7/8 oz #8's to shoot at doves with a cyclinder bore when no one is around to make fun of me (throw up a cloud of lead and see if something scomes down).
Don't see me shooting high volume like clays. Shooting an auto, you spend more time hunting hulls than shooting.
If you were shooting a 410 or 28, it would definitely be worth it to load. The Lee Load All won't handle those gauges, only 12,16,20.
But you can re-load once-fired 410's and 28s' by hand, crimping with a deep well socket, or do brass hulls. search Youtube.
You may want to give it a try one day, so stick to one brand of shell and pick up your hulls at dove shoots.