A few tips from someone who has signed the cheques for 30 years
1. Have the machine surveyed properly
2. Keep it in a hangar otherwise the bills will make your eyes water
3. Keep fuel on site ( will save a fortune in the long run let alone convenience
4. Make sure your maintenance company will travel to you for repairs etc etc
Be careful about the running costs of a Robinson if only flying 50 hours a year. You will run out of calendar way before hours which equals expensive flying.
I am not bashing a Robbie but you might be better off with a 206, it will hold its value better and there is no 12 year rebuild ( except TT straps every 3 ) Also easier to store fuel at home for it