I noticed I did not finish my calculations for the poll:
according to here:
Amazon.com: Organic Vanilla Beans, 1/2 Lb. Madagascar average count 40 to 44 stems: Gourmet Food
1/2 lbs of vanilla beans equals 40 to 44 pods
so this averages to 40-44 pods for 227 g or 17.62 to 19.38 pods per 100g
average then is: 18 1/2 beans per 1L of vodka
Luc H.