Or have i missed something. Our club trip is £350 at Dive Cellar in mid Aug this is Boat, dives, accom (half board) and travel (subject to final arrangements) for 12.
I like to have a comparison, gas is extra subject to EAN %.
As for the dive mentoring, we do it for a reasonable club membership fee which includes cheap air (£10 a year) and Nitrox (£2 a fill). Mentored from try dive (£5) through (Ocean - Sport - Dive Leader to Advanced diver - so 4 courses for a one off cost of £100 total).
So offering a service is fine, but lets put it into context.