On March 20, 2018, Wasabi's default pricing plan is the Unlimited Egress pricing plan described at wasabi.com/pricing. All customers that sign up for Wasabi on or after that date will be on this pricing plan. You can verify this by signing into the Wasabi Management Console -> My Profile -> Billing and viewing the Billing page (excerpt below).
If you are on the Legacy pricing plan, you will see Billing page info that looks like this excerpt below:
If you wish to switch between from the Legacy pricing plan to the Unlimited Egress pricing plan (or visa-versa), please contact us so we can make this switch for you. Further details are in this article.