I have many EQ Futures trades and the Brokerage calculator and Virtual CN are way off bcos of exchange Trx Chgs.( all NSE segment)
Zerodha pricing shows 0.0019% but has always charged the highest slab of 0.0020%. Even yest CN has same diff. This deviation is around inr. 1-1.5 per trade. Then GST on it will also be higher.