Okay, here they are. It's the best 450g you'll ever spend. The trainer will accompany you for the first 2 days to get them used to your voice and smell and make sure they transfer their obedience to you.
They will require several pounds of red meat each day, per cat. They also need a good amount of exercise. The trainer will show you how to hunt them. If you hunt them every day, that will provide some of their diet and all of their necessary exercise.
One last note, once the trainer leaves you will have a rough couple of days when they will try to rebel. Do not hunt them during this time - feed them yourself by hand (carry a big stick in the other hand and don't be afraid to use it if necessary). When they begin showing obvious affection to you with or without food you have won them over and may then hunt them.
Incidentally, this is a mating pair, which is why we wanted them kept together. If you successfully breed them we will purchase the kittens for 25g each.