Big Boi (from Outkast) has been running a kennel since the early 90s. A lot of stars own his dogs. And from the looks of those prices I dont think the owners will be fighting those. And even though i"m not there nor do i know the guy, i do think he raises them for the love. google the guy about his dogs.
http://pitfallkennels.com/
and as far as Vick's dad..... It was more than likely one of those revenge type deals. No father that loves his son rats him out for no reason. He had his 15 seconds of fame.