In late August through September 8th I ran a giveaway on Goodreads for the Eric Filler novella The Comeback: Rock n Roll Gender Swap. Besides on Goodreads I advertised the giveaway on my blog (both Eric Filler & PT Dilloway), on social media, and in the Eric Filler newsletter. By the end I had about 400 entrants; in the last hours the number really skyrocketed as I guess people looking at the "ending soonest" took notice. In the end all it cost me was about $13 to purchase two paperbacks and send them to the winners.
And in return the response was really good. Much better than many recent efforts. In the first three weeks it made over $250 just in purchases--I'm not sure how much the pages read will come out to for Kindle Unlimited readers. So for my $13 investment I got a tremendous return.
I don't believe in shelling out hundreds of dollars for advertising on websites and such, but this was definitely a low-cost venture that paid off. I'll probably have to try it again with something else.
You can still get it for $3.99 on Kindle or $5.99 in paperback!