We have 2 subscriptions for our grandkids. One is graphic novels - who knew that didn't mean novels with graphic nudity! Our 7 year old grandson loves the graphic novels? Our 9 year old granddaughter is equally as happy with the middle grade books she gets.
Whoever makes the book selections does a great job. It is hard to find books that our grandkids haven't read but they manage to find books they've never heard of but thoroughly enjoy! After they've read the books they are passing them along to their school library so other kids can enjoy.
We are very happy with Book Drop for kids!