Will US Copyright-granted ISBN interfere with purchased package of ISBNs?

[Crystal]

I am in the final stages of preparing my novel for self-publishing. I decided to register my copyright because you get an ISBN number for the price of the copyright registration ($65) whereas buying a single one is more expensive. Of course I need 2 ISBNs if I'm going to publish online, so I've decided to buy the 10-pack, since it's the best deal.

My question is, if I buy the 10-pack and apply one of those ISBNs to my print book, and then the US Copyright Office grants me an ISBN, would this mean my book would then have 2 ISBN numbers? As a librarian, I'm sure you know that could cause problems with librarians and book store owners. Could one of you, who understands ISBN numbers better than I, please advise?
Many thanks,

[rivka, Former Moderator]

This group is for Goodreads Librarians, who are Goodreads users who have volunteered (and been approved) to correct data in the Goodreads database. They cannot give you legal or publishing advice.

Closing thread.