Yes let it, move about your home.
It knows where to do its toilet, if you provide the cat with a sand
box.
You can buy the proper cat litter sand from the supermarket.
If you do not provide a sand box, it will do its business in your
bathroom.
I hope you know what you got yourself into.
Paying RM600 is the easy part, from now, its daily cleaning of the
cat's toilet, and feeding, ...............for the next 15
years.
If you're about 20+ now, you have to do it until you're about
35+.