We have special option on settings page - Exchange Rate Multiplier
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Clever how you avoid the use of external payment processors as such, am assuming its easy to expand to other exchanges such as bitfinex as you look somewhat limited to only 2 right now.
Thanks for answering my questions and good luck with your project

Thanks. You can use Bitfinex.com also
You can use your wallet address from any crypto trading platforms.
Here's a list of available
WordPress Plugins with DASH Payment Gateway - https://wordpress.org/plugins/tags/dash.