Every quote is built from three variables: the scope and complexity of the work, how many systems it needs to integrate with, and the delivery timeline you need. There's no rate card, because no two engagements combine those three the same way.
We quote in EUR for European clients, USD for other international clients, and INR for domestic engagements. The exchange rate is locked at the date of the proposal, the quote is valid for 30 days, and taxes are stated separately from the fee.