You do not seem to understand. Those monitors cost what, $20-40? You are going to spend many, many, many times that on the animal's cage, many, many, many times yearly on food, and then some more on your electric bill (it ain't too cheap runnin' a bunch of floodlights). A good large (8'x4' for a single sav and 6'x12' for a nile) cage will generally cost a few hundred dollars, and food will cost a few hundred per year as well. Actually, those costs may be more, I am just guessing.
Besides, those monitors are definitely wild caught. They are probably quite unhealthy, and have gone through a buttload of stress during importation.
Anyway, you don't seem to be very monitor-savvied, so I will direct you to the Pro Exotics website. It is a great place to start. Hopefully, you will stray away from all the wild caught savs, niles, waters, etc. after you visit there and go with some ackies. They are all captive bred and stay at a small size (about 2 feet, give or take). Sure that initial price is going to be a lot more that a wild caught monitor, but in the long run it will cost MUCH less that a 4 foot sav or a 6 foot nile. If you are concerned about the price of ackies, I suggest you stray away from monitors, and large lizards in general.
I too suggest you stay away from reptiles if you are looking for a "pet." If you want a social, cuddly pet, get a dog, not a reptile, particularly monitors. If you want to have an animal that you can watch and observe (and somewhat interact with) many interesting behaviors, then maybe an ackie is for you. But please, please, I beg of you, don't fall in for the savs and niles because the guy at the pet store says: "Dude, they make great, cheap pets. Just throw 'em in a fish tank and feed them some mice once a week."
But most of all, I suggest that you do lots of research. Learn how to properly care for your animal, and set it up before you bring it home. Plan for that animal, keeping in mind that the savannah monitor the size of your hand will grow to 3-4 feet in a years time. Truly think about and research what you are getting into...
Cheers,
Ryan
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There are three kinds of people in this world: people who can count and people who can't.