Confusion about IndMoney charges on Forex

I have planned to invest some money into the US stock market starting next financial year. While I was exploring my options, I thought of calculating the forex charges to convert INR into USD. I had an account with IndMoney and I thought it would be easier for me to check how they currently manage the INR to USD transaction. To my surprise, there's very little information available on the charges that are levied during the exchange. Here's what I could find: * They charge a platform fee which is 0.75% of the exchange amount, capped at ₹750. * 0.18% GST on the exchange amount with a minimum of ₹45. * Uses an exchange rate provided by the partner bank. The one thing that I wasn't able to find was how it calculates the commissions and the correspondent bank charges. To check that I tried to add ₹10,000 into the US stock balance. The calculation that it presented was that I would get $111.94 for ₹10,000. ₹10,000 - ₹45 (GST) = ₹ 9955 / 88.93 (exchange rate) = $111.94. [IndMoney Screenshot](https://preview.redd.it/n8qulvcmt5ie1.jpg?width=1290&format=pjpg&auto=webp&s=32da5f345cb5ca46bdee4f37db1e06eccafc014e) But what confused me was that it said "You're saving ₹1175 on transfer charges and forex rates". This amount looks close to what you'd incur for the correspondent bank charges if it had been done directly by the bank. So I thought they're bearing this amount on their own. But then when I went ahead, it redirected to my bank's outward remittance portal and tried to add the $111.94 amount. The bank is clear with its policies, and I am pretty sure they'd charge me with the commission and other things. So how exactly am I saving ₹1175? Can someone help me out with how IndMoney works? PS: I cancelled the transaction, so I cannot confirm the exact charges levied by the bank. Edit: Added a screenshot for reference.