Trading Teon. The Beast Masters, #1

Garon and Lorne, shapeshifting males of the Ralenium race, are fierce guns for hire in the universe. When a cargo ship transporting women charged with crimes by the Galactic Star Union arrives on their planet, the men make the traders an offer they can't refuse. Planet Ralen is sorely lacking in women, and the males have an inborn desire to dominate, to tame females and to reproduce. When their inner beasts' clocks start ticking and the burning need to spread their seed consumes them, they go on the hunt for the perfect female.
Too bad both men want the same woman. Teon, a lady with a place in high society, thought life as she knew it was over when she was wrongfully charged with a crime by her stepmother. A prisoner en route to a barren planet to serve her sentence, she's presented with an opportunity to start over again on the planet Ralen. The catch is she has to be willing to be claimed by two males. Not just any males mind you, two burning hunks who are ready to fight to the death if need be to share her bed.