The phrase "a complex and expensive" is correct and usable in written English.
It can be used to describe something that is both intricate in nature and costly in terms of financial resources.
Example: "The project turned out to be a complex and expensive endeavor, requiring significant investment and expertise."
Alternatives: "a complicated and costly" or "a intricate and high-priced".
"When you partner with these guys, it becomes a complex and expensive process.
Drug discovery is a complex and expensive process where different research areas converge.
Fans complain that the once simple process of getting tickets has been transformed into a complex and expensive digital chore.
Software design is a complex and expensive socio-technical process, for which reuse is an increasingly important concern.
It is a complex and expensive activity and as such warrants considerable effort to minimise costs and maximise effectiveness.
Although there are many approaches that model and parallelize phylogenetic analysis as scientific workflows, exploring all MSA methods becomes a complex and expensive task to be performed.
But it's now up to the Italian authorities to decide whether such a complex and hugely expensive operation should be launched.
If eukaryotic cells could elevate their transcription levels simply by having strong promoters, why do they bother to use splicing, which is a complex and energy expensive process [ 67]?
Except for its date and vintage traits, the chardonnay isn't new; Palmer has long offered both a basic and a more complex and expensive reserve chardonnay.
The big question for the designers of robotic and prosthetic skin is whether these characteristics can be reproduced by a single layer or whether a more complex (and expensive) skin made of multiple layers will be needed.
IN a move away from reliance on a few complex and expensive spacecraft, the National Aeronautics and Space Administration is drawing up plans to send 16 small, low-cost landers to the surface of Mars beginning late in this decade.
