I tried out a Fivvr promo last week: one of those, "We've got thousands of loyal Facebook fans" type things for US$5.
I put up a Wildcat in Moscow, a full length mainstream romance I haven't promoted for a while so that I could see exactly how well the promo worked in terms of hits and sales.
In 3 words: waste of time.
Really. Complete, total, utter waste of time. Didn't even get a spike in hits, never mind a single sale.
So I'm back to doing my own networking and promo. It's hard work, but at least I know it generates sales.
Now, if you like the idea of a cool purple haired Goth heroine, check out The Gift: An Erotic Romance in Kiev Just US$1.99