You can globally turn on and off your inventory on CardRocket. Head over to your account page and check the "Vacation Mode" checkbox at the bottom of the form. Your account page will be removed from the public viewing and all your sales will be removed as well.
Use this if you won't be able to fill your sale orders for while or won't be able to check your email for sales for a long period of time. When you get back, just head back to your account settings and turn it off. Your inventory will appear publicly again!