"Percent royalty" refers to a percentage of money earned that is paid to someone as compensation for using their intellectual property or creative work. Full definition
The advance, though small, is better than nothing, and a 50 percent royalty rate seems fairly generous. (slate.com)
The other thing I'd say is that when we made that 70 percent royalty option available, we cut a lot of those checks. (cnet.com)
However they also offer a 20 percent royalty on books sold through third party platforms, which is twice the amount offered by most other publishing services. (amyharrop.com)