If you buy an airplane with an engine at or past TBO, the hours until
you have to overhaul it are essentially "free". If it is making good
compressions, no oil burn and no metal, making good power, then
chances are a past TBO engine will go another 500 hours.

The guy neglected annual and hangar/tiedown.
Here is a list.

FIXED COSTS
Hangar or tiedown
Annual (just the annual, NOT repairs)
Insurance

HOURLY COSTS
Fuel
Oil
Maintenance
Overhaul Reserves

The least expensive twin would probably be a Piper Apache, although a
Twin Commanche would not be far behind (and might actually be less).
They all seem to have a lot more things on them to go out than a
single, not just the extra engine.
"Tom S." wrote in message ...
"Dan Luke" wrote in message
...
"gross_arrow" wrote:
(realistically,
you should add about 20-30/hr for overhaul, but we
have really low time engines and figure that we'll trade up
before we get to o/h).

Doesn't matter. That money's spent anyway because hours on the engines
decrease the value of the airplane when you sell. You can't avoid
overhaul costs.

But you can avoid the short term cash outlay.