The most important factor to remember is that the price of equity takes a firm's debt into account, whereas the sales does not consider financial leverage. Generally speaking, Price to Sales ratio shows how much market values every dollar of the company's sales.
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MV Per Share
Revenue Per Share
Price to Sales ratio is typically used for valuing equity relative to its own past performance as well as to performance of other companies or market indexes. In most cases, the lower the ratio the better it is for investors. However, it is advisable for investors to exercise caution when looking at price-to-sales ratios across different industries.