Online auction leader eBay Inc on Tuesday introduced price changes and tighter sales standards in a bid to retain quality sellers, improve customer service and revive flagging growth.

In a speech to eBays top store operators and market makers in Washington D.C., CEO-in-waiting John Donahoe will set out a plan to reward the companys best sellers with sales incentives and priority ranking in search results for auction items.

Key changes involve lowering fees for listing items within auctions or for independently operated stores run on eBay. It also involves raising some of the fees sellers pay once sales transactions are successfully completed. And eBay plans to raise minimum standards to discourage abusive sales practices.