As gonehuntin said, they are pretty much all 1k - 1200. I have mine inside - tell your mom you'll keep her in a kennel inside. They do fine, and then you wont have to worry about ripping up the house or having accidents in your moms house.
Be sure you are thinking ahead as far as saving up enough money, the initial investment is cheap compared to food, vet bills, emergency funds.
If you can dream---and not make dreams your master;
If you can think---and not make thoughts your aim,
If you can meet with Triumph and Disaster
And treat those two impostors just the same.