This is our first 99p title and it sounds dreadfully cheap. 
After all, what can you buy for 99p these days? A chocolate bar, a small piece of fruit - but certainly not a cup of tea, a coffee or even a bus ticket!
Yet, 99p for Underground will take you places you have never been - the soft green landscape of the antebellum south where Samantha prepares for her debutante ball, not knowing she'll soon be heading north with two escaped slaves. In a parallel story, we have Annie in the mountains of Vermont, tracking the codes left by the slaves who travelled Underground. Truly another world. 
Yet Gayle O'Brien takes us on this vivid journey - an absolute treat for only 99p!

http://www.amazon.co.uk/Underground-ebook/dp/B007QU48QE/ref=sr_1_1_title_1_kin?s=books&ie=UTF8&qid=1343639119&sr=1-1