I'll be the ultimate litmus, giving away 425p novel and 14ss on Taylorkole.com. Dedicating hours a day to trolling anywhere, asking, hinting, begging for reads, I've been getting 1 as sale every 3 days (all 5 stars so far!) 1-2 emails registered on mailchimp. Yesterday I offered free magnets will book cover on front and had overwhelming response. From 42 emails to 218, and 105 magnets to mail out. I'll keep you posted if it translates, and welcome thoughts and experiences.