If you do not wish to sell a service that is offered through Gradwell Cloud, you can disable it and it will be unable to be purchased. This is done by disabling the Service Plan for the product that the customer purchases and then syncing your changes to your online store.
To make your changes this, login to your control panel and select the Billing link in the top right corner.
From the left hand menu, select Service Plans.
A list of service plans available loads. You can use the search if required to narrow the results. When you have found the plan you require simply click on it...
...and then Publication Settings from the top menu.
Now select Edit...
...and untick the Published box. Select Save Changes.
This marks the plan as unpublished...
Which can be seen back on the list of service plans - but it isn't yet unpublished from the online store.
To resynchronise the store, select Online Store from the left menu.
You'll see a message that settings have been updated, but need to be synchronised. Click Synchronize Now to start the synchronising process and complete your changes.