I use an independent location for lessons, at our local Art Center. They charge about $10 for group, less if you join the Art Center and buy a "punch card". It's $90.00 for 12 punches for drop-in classes. When I take a private lesson there, I pay $50.00. Several times my instructor and I used a different location (I needed practice rooms for an event) and I still paid my instructor the same $50, plus the $10-20 for the room. (Yes, our local Y and other locations were VERY accommodating.) I've also taken a couple of private lessons while traveling and the prices were more than this. However, it was with a 5 time world-champion who had recently opened his own studio and only one other person came for the "group" class. So I got essentially a private lesson for $50.00.
Other private studios in our general area charge about $60-$150 depending on the instructor. When my husband started out, we looked at, I'll just say nation-wide dance studios; we weren't comfortable with the cost or program. We're about 60 miles from any large-metro area, but when we decided to take our first lessons, I was surprised how many options there were in our small city or within 30 miles, for taking lessons. We still take group lessons, for the camaraderie, but I won't drop my private ones as they're so beneficial.