Sort:  

Yes, and it will be more impactful, it will surely be in near future. 7months ago the price of 1 SBD was about $2, today it is $6 and it is expected to increase more in the next years.

Can I exchange sbd to fiat in Steemity?

Available purchase methods are: BTC, LTC, ETH, ETC, USD, EUR

You can exchange SBD to any of the above currency and then you can proceed.

Will I pay bitcoin fee at exchange?

Yes from the website you'll exchange, if they charge some fee, then you'll have to pay.