European digital currency exchange Bitstamp has introduced a new pricing structure as it prepares to expand its trading portfolio.

Starting August 17, Bitstamp said it will add markets denominated in U.S. dollar, euros and bitcoin for ether, the ethereum-based digital currency. But instead of having a separate fee schedule for each trading pair that Bitstamp supports, the exchange said it makes more sense to unify the fees and introduce a “simple, straight-forward and competitive pricing.”

Under the new pricing structure, Bitstamp will combine the customer’s 30-day volume on all trading pairs before converting the amounts to U.S. dollar and then applying the relevant fee according to a simple fee schedule, which can be found on the exchange’s site.

To promote the new markets, Bitstamp said it will waive trading fees for those pairs until October 1 and will also offer discounts until the end of the year.