To edit price and membership for products in bulk:
On the product listing page of your store Admin area (Catalog -> Products), select products you want to edit using checkboxes.
Click "Bulk edit selected -> Price and membership."
In a new window, edit the field(s) for the products:
Price: Use this field to specify the product(s) price.
Market price: Use this field to determine the product(s) market price.
On sale: Use this field to put the product(s) on sale.
Memberships: Use this field to ADD, REMOVE, or REPLACE membership for the product(s) (choose the action first, then select the membership value from the list).
Tax Class: Use this field to set a tax class for the product(s).
Click Save changes.
Related pages: