Having flown my own light helicopter for the past 25 years ,with no hangar costs or landing fees but with a tad expensive maintenance costs I would say....don't think about profit...just enjoy the freedom. However my machine is still worth the same as I paid for it ....if you ignore inflation ,but its now getting hard to find spares. Conclusion...buy an Enstrom or Bell 47 where spares still readily available and helicopters hold their value...not a Robbie which devalues over time.
P.S. If someone had an Enstrom or 47 in the Bristol area I'd happily share with a contribution of free hangarage and cheap fuel!