They can't bear to see you leave the shop empty handed. I have mdh deggie mirch & lahori deggi mirch, both different in heat,taste and colour.
Probably a blend of all sorts of peppers/chillies in those boxes James.
The shopkeeper wouldn't have a clue whats in them. You may prefer freshly ground, I'm not sure I could tell the difference though in a curry.
Get his Kashmiri mirch recipe next time your in

Regards
ELW