I sent about 3k LC 5.56mm cases out to be processed just so I didn't have to deal with swaging pockets or trimming huge quantities of brass. I've done those big lots before... and it's a huge time sink without an automated dedicated press for whatever caliber you are doing.
The down side is you have zero control over QC, and it's money burnt on cases you may lose/trash/ruin.
I have used a Super Swage before... they work, but you have to sort your cases by headstamp and adjust for each type, since all the case webs seem to be different sizes.
The press mounted RCBS swager also works, but is sorta a PITA to use. I have not used their Super Swage knockoff... reports are it's decent.