Oh yeah, that's fine then.
Edit: Okay, to get this, I had to combine rules from the PHB, MM2 and A&EG.
If you want pets/exotic pets/et cetera, you'll need someone who can train them. This means either maintaining a hireling, or build followers for the purpose of training your pets. I think it's probably fair to say that a follower can train as many HD of pets as they have HD, themselves (so particularly HD-heavy pets would require multiple trainers all on their own).
If you want an exotic pet, you must pay the cost of training and rearing it. If you want it to be battle-capable, then it needs to be a warbeast (otherwise it will flee unless it makes a DC 15 Will save every time it feels threatened).
The market price of a warbeast is a function of its Hit Dice: 50 gp/HD for a warbeast of 3 HD or less, or 100 gp + 75 gp/HD for one of 4 HD or more.
There are no rules listed for what to do if you don't want a warbeast, other than to look at the various creatures that have specific costs listed, so I'd just say halve the cost/HD for a non-warbeast.
You also need to take these surcharges into account:
Handle Animal DC: 15–19 125 gp
Handle Animal DC: 20–24 250 gp
Handle Animal DC: 25–29 500 gp
Handle Animal DC: 30–35 1,000 gp
Unusual movement: 500 gp
(fly, swim, burrow)
Difficult special ability: 500 gp
(per special ability)
Vicious creature: 1,000 gp
Assistant required: 100 gp
(per assistant)
Charm monster scroll: 700 gp
And you should take this into account: Creatures with alien mindsets or ecologies (such as those from other planes) or those requiring unique equipment, can drive the price up even farther.