My personal target is 52 dives a year, so far this year I have done 67, and the last few years I have averaged 80+/- per year.
Locally I usually dive the east coast of UAE, 90 minute drive each way fuel cost $27
2 dives per trip - Air $3 per fill - Nitrox $5.5 per fill - Trimix (20/35) $100 per fill
Boat trip for two dives $100 incl tips.
Like many others I have several tanks including two twinsets, six singles, three stages and a couple of pony bottles along with ten regulators (first stages - not all have two second stages) all need regular servicing
I usually do a couple of overseas trips per year usually to SE Asia (Malaysia, Indonesia and Philippines), always land based, my last live aboard was back in 95 in Thailand.
I also try to dive in some places that I visit for work such as Oman, Saudi Arabia (Jeddah - Red Sea), and more recently Spain, and yes I take all of my gear with me, including camera equipment on these trips (except tanks and weights).