Look at the other homes for sale. If priced too low like many foreclosures they create a bidding war and can sell way above asking.
When you see a steal, buy it. Why be greedy and take a chance of losing it?
I am an exclusive buyers agent and deal with buyers haviing mind sets like yours all the time. After they lose their dream home for a few thousand dollars, I have to console them.
in my market we have a client portal which I send homes with pictures, maps and all details that meet their financial potential and dreams. This educates me as to their likes and dislikes. They are now prepared to know a good deal when they see it.
Exception; If you are looking at a fixerupper. Know what you are doing or walk. Then you are in a position to bargain.
Hope this helps.