I suggest going to www.chins-n-quills.com
Ask questions and learn as much about them as you can, then decide. They are not for everyone! They're spunky and curious, but will probably never come to you when you call them, and hardly ever get cuddly-sweet. They chew up everything, and have no regard for where they poop. It can be hard to find a vet who knows anything about chinchillas. Care is relatively easy - if you're used to rodents. I grew up with rats, hamsters, etc. Clean cage, fresh (high quality!) chin food and hay, clean water daily, frequent dust baths, lots of play time (in a chin proofed room - They chew!). Temperature needs to be kept below 75 degrees (they can die from heat stroke).
They do make very fun pets for the right people.
I deffinately suggest buying from a reputable breeder or rescue (there are chins in rescue because people don't realize you can't just stick them in a cage, never give them dust baths or exercise, and feed them rabbit food!).
Go to chins and quills, they will help you learn what you want to know!
Cost varies greatly between $75 and $500, depending on quality and color.