Pictures are always helpful!
I'm not a flute expert but the few flutes I have sold: Gemeinhardt 2SP, Buffet Crampon Cooper Scale sold for $100 each
1950s CW Blessing sold for $50, and a 1960s Artley sold for $90.
Things like Wm S. Haynes sell for several hundred to thousand, so there quite a huge range in prices for flutes.