I've reloaded .410 for quite a while, and I use a MEC 9000 HN ( hydraulic )...and the .410 is pretty easy to load ( 1/2 oz of shot )...so it works out to about $ 2.60 a box with # 9's as an example. On the MEC 9000 HN you have to turn the speed down that it returns back to the top of its cycle to reduce the "wobble" of the hulls in the stations...but the process is the same...resize, reprime, powder, wad, shot ..and crimp.
If you don't want to go Hydraulic ( expense or whatever ) -- then consider the MEC Grabber or 9000 GN - both manually operated progressive machines.
The .410 hulls tend to be a little brittle ( I use Rem STS hulls )...so you will get some cracking ...and they won't last as long as other gagues like 12ga or 20ga. I probably get 5 or 6 loads from one hull...and then just weed them out..shoot them up in practice.
If you load "00" or "000" you just need to figure out how many equal 1/2 oz..I just don't have my notes handy right now...but its easy to weigh them and see...but it depends on how much "00" or "000" you'll shoot on whether you want to fuss with that or not.../ in the last 20 yrs, I've probably only loaded 10 boxes of "00" buck in .410.../ mostly I load 9's or 8 1/2's ...for Skeet and Sporting Clays..and for some of the young grandkids to shoot / but the 28ga is a better gague to teach a young shooter, in my opinion, patterns much better and the sucess rate for shooter is much better...
I reload .410 for a Browning XS Skeet O/U 30" barrels...( I have the same gun in 28ga, 20ga and 12ga )...and the .410 can really frustrate me somedays on Skeet field.../ so I reload way more 28ga ...and 20ga and 12ga ..../ lots of 28ga for the younger teenaged grandkids ...
Reloading for the .410 or 28ga will always save you more money than the other gagues - because retail price on .410 and 28ga are pretty high ---- but its not really about savings...its about producing a better shell..tailored to what I want.
But yes, if you buy a good press...it should not frustrate you ...and it'll save you some money if you shoot enough .410 ( I recommend MEC presses --- and make sure you buy a press that resizes ...some of the cheap ones don't).