Let me break down a bit & address few different points.

The external one is supposed to protect the chips from both rancidity & crushing. Crushing wise, that's why you have to pump air into it so that it acts as a cushion. Try to squeeze Twisties or Mr Potato packets & you'll know what I mean. Is it cheaper to use one good quality package vs your current internal + external package? I thought you double pack because your external package from China isn't safe for food lol.

Probably you need to stop marketing it as a snack or chips? Dunno how many people jump at your price already. The moment you do, people start comparing it with their regular snacks which is way cheaper than yours & then they get heart attack with your price.

I'm selling soaps for RM40. Ordinary soap is RM5 only. If I go around telling people I'm selling soap, of course it won't sell. Have to justify why it's worth RM40 & make people go "Oh yea, this item is usually around RM40 anyway". That's how Starbucks manage to sell their coffee & Chatime sells their bubble tea. Of course there'll be people who will say "Crazy, RM2 kopi selling for RM15" or "RM3 sugar water selling for RM7". You can't please everyone, so the key is to either please the majority (mass market) or the minority who can afford (niche market).

You can't please everyone's taste bud. Just don't compromise on your product quality & safety.

So if you use better ink (better quality packaging), it'll be cheaper than external + internal packaging? I'm not familiar with this honestly lol, just throwing food for thoughts to you only.

Because you buy directly from China without technical experience, probably that's why you can't ask for sample printing first for you to check & test quality. Maybe for now, no choice just pay a bit higher price to get the packaging locally. Once you expert already & know the exact specs that you need only go to China source. Even that also sometimes those PRC will try to con you, so be careful la when you're in China - talk, discuss & paid for specs A but deliver specs B to you.

Branding is different, it's when Starbucks vs Coffee Beans (direct competitor), why should buy Starbucks's RM15 coffee vs Coffee Beans's RM15 coffee? But for Starbucks vs Kopitiam (indirect competitor), "why should buy Starbucks's RM15 coffee vs RM2 kopi", it's called Product Positioning.