This line appears in the book, which I think tells you pretty much everything you need to know:
"Alexa edged back, pushing back until her back pushed back against the wall."
Thankfully, it was only 16 pages. But, for something that was basically nothing but dirty talk, it contained only two paragraphs of actual sex.
But then, with hilarious descriptions like this:
"She looked up at him. His eyes were striking, like a goat’s, but without the sideways pupils."
...it was definitely worth the 99p I paid.