There is an increasing trend amongst publishers to introduce a debut author by providing a free e-novella linked to the debut novel, prior to the full length novel releasing. Jen Turano and Melissa Jagears come to mind with their free e-novellas, Gentleman of Her Dreams and Love by the Letter, respectively. Lynne Gentry is releasing three novellas to complement her time travel Carthage Chronicles, the first being A Perfect Fit at under a couple of dollars.
Personally, I think it is a brilliant idea – a way to sample a new writer to see if you like their style …