The cost of pet insurance varies depending on where you live, what kind of animal you want to insure and what kind of coverage you are looking for.
You can get a basic accident policy for a generic dog or cat starting at around $15 a month. As with all things, when it comes to pet insurance you get what you pay for. If you want accident, illness insurance with a wellness plan thrown in to boot... it's gonna cost more.
The best thing to do is to shop around. Get at least 3-5 quotes and ask a TON of questions, read the fine print and compare companies and plans to be sure you are getting what you want at a price you can live with.
Remember... the devil is in the details. Be sure you UNDERSTAND your policy before you buy.