Yes, £150 p/h is correct. I was in an Enstrom 480 group for 6 years. We charged £300/mth and £125 p/h wet and it worked quite well.
I base my costings for the Hughes on fixed costs of about £25,000 which would cover hangarage, insurance and annual inspection. All split between 5 group members. The £150 p/h would cover the fuel and minor engineering work. You have to accept that a large bill will come along every now and then, but at least it's split 5 ways.
The machine is G-LEEJ. Happy to send pics to 500 fans. Just let me have an email address.
Steve