Thanks for your interest! I am looking to promote my box set (books 1-4) of my Immortal Merlin series, since book 8 was just released (and the series is now complete). It's on sale for $0.99 in US and UK from May 2-7. My mailing list is 1300 subscribers, and they enjoy urban fantasy. I can promote your book on May 7th or June 11th.
​Amazon.com: Immortal Merlin, Books 1-4: Ignition, Winded, Floodgates, Buried eBook: Shelford, Emma: Kindle Store