10-15% at Western Union. 30%+ for bank wire transfer. 7.5% to transfer money reliably into a failed state seems quite reasonable at this time.

If it's providing a high profit margin with regards to the risk involved, the price will fall over time as competitors enter the market.

I'd be interested to explore blockchain tech for low-cost money transfer, but the hard part is creating a global network of interchangers to turn the money back into cash - and there'd still be fees to cover risk.