Although the 405 remained in production, it was an expensive machine to build.

It was a large, expensive machine, the most sophisticated one on the market.

Most companies make them, even though some try to keep that hidden, probably so they can sell more expensive machines.

"Some expensive machines around here would be in very deep trouble," he said.

"We can now compete with the most expensive machines in the world."

It makes economic sense to buy the more expensive machine.

After all, you use only one of these expensive machines at a time.

To meet these problems, an extremely expensive and sophisticated machine had been developed.

Telling the expensive machines from the free ones is often tricky.

This began to change in the mid-1960s with the introduction of new, smaller and less expensive machines.