Current data is only available till 2009. $39.50 in the year 2009 has the same "purchase power" as $1.5 in the year 1900.
From: Measuring Worth - Home
I have a straight razor manufactured by "Salem Markos and Brothers" that has engraving on the blade, faint but legible, that says "$3.00 Razor" so apparently this one cost (then) $3. I can't come up with a date for this manufacturer, though.