I’m also interested in knowing this so let me know. As for me, I’m currently using Payoneer and their conversion rate isn’t that bad but it’s definitely not accurate. So if on google 1USD = 75 INR, I’ll get a conversion rate of around 74INR. As for their service fee, it’s a fixed $3 USD even up to payments of like 800 USD, that’s the max I’ve debited atm, soon I’ll be trying if the service fee increases if you cross the $1000 limit but I don’t think it will. Also, I feel the confusion is there because their rates are different depending on where you’re from so definitely interested in knowing a detailed answer on this from Indian Sellers.