TS, 1.75 rate u paid included the agent commision rate.
1.9 rate u stated does not include 10% agent commision yet.
if u calculate and compare it is about the same, not much difference.

sensitive fee is common practice required to ship certain category of product for every agent.
i believe you have understood all terms and condition before placing order.

agent only work as a medium to order and ship product for us from china, thats why we pay them commision.

if anything bad happen during the process best is to sort it out nicely with mutual understanding, forcing and pushing is not the best way.

i have been dealing with her for sometime, she is among the best one that provide the service.