Hi superdave

I have to agree with B777. Just because the engine is smaller, doesn't mean that it will cost less. The material costs are slightly less, but the labour to put it all together is about the same. And as B777 stated, regardless of size, they use the same controllers and valves that the big boys do.

If your looking for cheap, look at the used engine market. If your looking for small and cheap, look at the used engine market in a couple of years.

Otherwise, buy a kit or plans and have at it.

Ed