Deadstick Dan,
That's always been one of the issues I have with engines above the 1.00 size, they really suck down a ton of fuel, and at almost 20 dollars a gallon it gets to hurting my wallet real fast!
Along the same vein, I spent many years building larger and then even larger planes. It doesn't take long to learn that the cost of setting up anything larger than a 60-90 size model can escalate very quickly. Once I was cleaned out by the thieves, I decided to restock my hangar with quite a few .30 -.46 sizes and electrics, and nothing larger than a .90 size to keep the costs down. The unexpected bonus I got from this is the easier storage. These smaller planes and their wings will tuck right into the ceiling joists in my basement and 2 strings with hooks will hold them there neatly and easily. They're safe here too, that's a big one for me.
Fortunately, my eyesight is still good so I can see the smaller ones flying at a distance.

Jim