Please do not haggle with a family owned mom & pop type of store. With the online shopping phenomenon, it's very difficult for them to cut costs and maintain a decent profit margin, if any. Many of the stores will close in less than 5 years.

On the contrary, you should haggle all you want at the big box stores such as Peformance or Sun and Ski. A polite way to do is request for a price matching. Why do I negotiate at the big boxes? Because they negotiate every single day with their suppliers (Walmart is the most extreme example)