I don't know much about it, but age is probably 1910s or 20s and most paper label bottles are quite rare if not unique since few survived. But note that while any given paper label medicine is quite rare, paper label medicines in general are not rare because there are so many thousands upon thousands of different ones out there.
Oh wow, I have no idea why that one would be so expensive but there must be something particularly interesting about it. Typically I'd expect bottles like this to sell in the $5-20 range. Probably quite a good find in that case!
I suspect that may have been a fluke...very strange for a bottle like this to sell for that sort of money. Maybe someone was looking for something from the Louisiana pharmacy that was also on the label of that one. I suppose you never know, but don't count on a repeat of that...I see you've already listed yours.