Please correct me if I'm wrong . . .
Yes, some companies have made a success of reloading ammunition . . . in fact, I've used quite a bit of it in my 38s prior to reloading/handloading myself . . .
BUT . . . and that's a BIG BUT . . .
I don't think those companies package their reloads in zip loc bags with no information on them. BUT . . if there ARE companies who reload and package their ammo in zip loc bags with no information on them . . . then personally, I'd walk right on by . . . especially if they put as much effort into their reloads as they do their packaging . . but that's just me.
Anyone can shoot "reloads" such as the OP describes . . it's their gun, it's their hands, it's their eyes . . . but you still have no idea of "what" the reloads are . .
you have no idea if they are some super hot loads some idiot has loaded up "just to see if they will work".
In reality, most folks go to a LGS and buy ammo with the expectation that it is "good ammo" to shoot in their pistol/rifle/shotgun. They don't really know the ins and outs of cartridges - all they want is something that will work in their firearm and go bang. I'm not knocking them . . I just don't think a lot of folks get in to the "ins and outs" of it. They have no idea of "increased pressure", the damage it can cause, double charges, weak charges, squibs, using Mag primers in place of standard primers and the increase in pressures that can result - not to mention the types and differences there are in powders and the minimum and maximum charges. That's why I only shoot what I reload . . and why when friends ask me if I will reload for them, I say no.
So . . . call me a "pantywaist"
LOL . . . I'll answer to it! But as I type this, I have all ten digits on my hands, can see to type it and none of my handguns have had their barrels "remodeled" so that they look like a blunderbuss.