How much should i pay for my first mountain bike?

I've been looking to start a new hobby recently and decided I might like to try mountain biking. Not positive if I will end up liking it or not so I don't want to start off with too much of a commitment but I still want to get a quality bike. I'm mainly just looking to start going to some state parks and ride around for now until I'm more comfortable and may try more adventurous types of riding. Any advice?