I tried my best to avoid it, but I really have to spend £900-ish on this;
The PDF's I've been emailing to the printers aren't quite up to it re: bleed & spine configuration.
Plus, I'd like to be able to properly read & modify illustrations I receive in Photoshop / Illustrator.
I guess buying this software is symbolic that I'm really running a business and am serious about being a publisher. About time too.