This is an excellent example of how a local store can be indispensible. Being able to sit on a bike and take it for test rides is critical in finding the correct size for YOU.

There doesn't seem to be any thing like a standard sizing in the industry. Sometimes it seems there isn't even standardization within brands. Modern bikes are also very adjustable. Move this or that or change a small part and big changes can be had.

Pricing as far as I can tell has more to do with marketing than anything else.

So....head down to a local store where you can sit on and ride bikes. Who knows; maybe you will not only find THE bike, you will also learn enough in the process that you will get through all the snake oil and find your enjoyable niche.