Find an agent that understands you are going to be making low-ball offers. This is how you can feel-out the market over time. Just keep probing the price sensativity with offers. You’ll get a feel for reality after about 4 months of this. Then you can plan accordingly as to your strategy. This is what I do when I’m serious about an area that I want to own in. You find deals by making offers.
Quite often the person they put in the open house may be a new agent or hungry for new clients. Utilizing this has worked well for me in the past.