Trevor
In most packs, an Omega, even one who couldn't breed, was treasured and would be revered and protected, not cast aside. But our pack was not like most packs, and I was not like most Omegas. I was human, so I understood why I was being sent to the auction. I didn't like it, but I understood it. Even if there had been affection for me, even if they had been willing to keep me as a pet (neither of these was the case, but an Omega could dream), Cal couldn't afford not to sell me.
Clint
Omegas were hard to come by worldwide. While I would have preferred to mate for love, it didn't seem that it was in the cards for me. I had taken over as pack Alpha five years earlier, and it was high time that I started adding to the pack population. Granted my pack is run less rigidly than some; the Betas in my pack are not just allowed to breed but actively encouraged to. Unfortunately, only a small number of Beta females are fertile enough to get pregnant, and I'll be damned if I am going to hump my way through the pack until I find the ones who are - which brought me full circle to why I was standing in line to pick up the bidding paddle at the auction house.
Less even than a marriage of convenience, purchasing an Omega at the auction was more of a long-term service contract, a means to an end, so what was an Alpha to do when he found his soul mate on the auction block?