I watch Paul Frey's site regularly. (
www.ravensrelics.com) He handles less-than-top shelf items more often than the aforementioned sellers. Very nice artifacts, just not $1000 Flintridge dovetails, etc. One variable here has not been specified: how long is the piece in question? Makes a difference if it's 2.5 inches or 4.5 inches! Maybe Arrow Head Newbie will send a photo of the blade next to a ruler for us.
Photo attached is of two pieces from Frey's online store priced at 2 for $65. Fair and reasonable. Assuming our piece here is about same length, I'd say $25 to $30 is about right! Maybe $20, maybe $35. For a NY collector who does not have a Normanskill, maybe a bit more. I haven't seen a whole lot of them come for sale.
I highly recommend
www.ravensrelics.com. Interesting to see what comes up for sale and for what prices.