factor in some growth in CBA price prior to DRP, reduces amount of shares, but increases their cap value - using interest rate as a base here, its all a guess but on average will likely be higher

calc.py

@@ -223,7 +223,9 @@ def calculate_savings_depletion(finance):
             break
 
         # twice a year, CBA has a dividend of $2-2.5 DRP gives back around 20ish shares twice a year, estimate this...
+        # and on average they exceed interest rate, but lets assume at least int.rate increase (remember its twice a year, so /2)
         if current_date.day == 1 and (current_date.month == 4 or current_date.month == 10):
+            CBA_price = CBA_price+ CBA_price * (Interest_Rate/2)/100
             drp = int( (2.25*D_CBA_shares/CBA_price) )
             print( f"DRP {current_date} - adding {drp} CBA shares" )
             D_CBA_shares += int( (2.25*D_CBA_shares/CBA_price) )