Selling from a small town is harder in two specific ways and easier in one that matters more.
The two hard parts
Courier pickup. Fewer options, and sometimes a trip to a hub rather than a collection from your door. Build it into your dispatch deadline rather than discovering it.
Reach. Nobody local knows you are doing this, so your first audience is national or it is nobody. That is the opposite of a market stall.
The part that is easier
You have stock nobody in a metro can get.
A buyer in Bengaluru cannot walk to your weaver, your potter, your coin dealer, or whatever is specific to where you are. That is not a sentimental advantage — it is the entire reason somebody watches a show from four states away rather than going to a shop.
Lean on it. Say where you are. Say what is local about what you are selling and why it is made that way there.
The practical things
Offer collection locally as well as posting. It costs nothing and it makes the awkward items sellable. Pickup.
Be honest about dispatch. A longer, kept promise beats a shorter, broken one.
Pick a slot and keep it. Regularity builds an audience that does not care where you are. Scheduling.
Questions people ask
Do I need a GST number?
Not to open a store. Whether your turnover requires registration is a question for an accountant.
Will buyers trust a seller they have not heard of?
The held money is what makes that reasonable. How.
Is courier cost higher from a small town?
Sometimes. Get real quotes before setting rates.
Can I sell in my own language?
Yes — eleven Indian languages and English. How that works.
More: shipping across India.