At Mirchi.com, we do not believe in forcing our sellers to set specific prices or offer discounts; each seller is free to set his/her own price or offer discount according to his/her convenience and affordability. We do expect that sellers will not offer their products on our marketplace at a price that is higher than what they would normally offer at their physical store or place of business.
Discounts are available to sellers to individually activate or deactivate at any time. Invoices will clearly indicate the discounts applied so there is no confusion whatsoever.
After all, the reason a seller lists products is to increase his business, not to increase the market capitalization of the online marketplace!