What is the value of a 402 Bandmaster accordion?

The value of a 402 Bandmaster Accordion can vary widely based on its condition, age, and market demand, typically ranging from $300 to $800. Factors such as whether it includes original accessories, its working condition, and any repairs needed will also influence its price. For a more accurate valuation, it's advisable to consult a music instrument appraiser or check recent sales of similar models.