Just chiming in to say that I recently signed with my agent for a YA novel, but I also write romance/erotic romance for epubs of different sizes. He's happy to look at my contracts for these and help me out, but I'm fine to 'go it alone' for these digi-books. Anything that's adult romance which I think is suitable for print/larger publishers I am giving first to him and the agency before hitting epubs. A good and responsible agent will want to ensure you're not being screwed over by a publisher, regardless of whether they are getting a percentage of your earnings. It's good business and the ethical thing to do. Just my two cents. Good luck with everything.