Signed bookplates and Artist's Bookplates are different. The signed bookplate is simply my signature, while the artist's bookplates are a specific commission. Artist's Bookplates start at pledges $275 and more. I'm copy/pasting some info from the campaign here:
★ ARTIST BOOKPLATE - Custom bookplates are bookplates that I design, print, illustrate on, and glue into a book with PVA bookbinding glue. This is as custom as it gets!
I will not be writing individual backer names in signed bookplates. I will not be adhering individual bookplates into every book.