I started with math to see what are the numbers.. Not that I really put a value for my time spent with my hobby, but to get a grip of what kind of hobby this is...
I counted that if I gaged 180 in an hour and I valued my time doing this 13$ per hour, it would add 0,072$ more to each pellet.
With 360 pellet gages per hour it would be 0,036$ per pellet.
So gaging them does rise the price of them by much since approximate price for a pellet is 0,043$. (12,9 per 300 pellets)
After gaging they are worth from 0,08$ to 0,115$ each! So 21$ to 30$ per tin if the starting price is 12,9€
So basically, gaged pellets would cost over double more. And actually, the cheaper pellets you buy and gage, the more it multiples the price of them!
I would buy them no doubt, but I feel this should be the standard, which would lower the prices at least when thinking with mass-production philosophy.