Price this NormanHall Spinning Wheel?

Yes I know this is a weaving forum - however I know many of you spin.  A friend would like me to possibly sell her spinning wheel.  It is a Nathan Hall #36 made in 2-87.  I have included a picture with the lazy kate.Any ideas?  I did look on line and found they sell from $2500 to $5000.  Can anyone narrow this down?  She does not remember what she paid for it.