Whenever possible it's better to batch register images as it's significantly cheaper. It costs $35 to register a single image. $55 to register a batch. A batch can include as many images as you'd like.
When not to batch register
There are some limitations with batch registering images you should be aware of.
Don't mix published and unpublished
Published and unpublished images should not be batched.
Published images have to be from same year
Images have to be published the same year to be batch registered. If they're unpublished, it's okay to mix years.
For example, you can't register a published 2017 photo with a published 2016 photo. But, if the photos are unpublished, you can.
* Info on the Binded Help Center is not legal advice. If you have legal questions you should ask an attorney.