The phrase "expensive in comparison to" is correct and usable in written English.
You can use this phrase to indicate that something is more costly when compared to another thing. For example: "The iPad is expensive in comparison to other tablets on the market."
However, buckling-restrained braces (BRBs) are heavier and more expensive in comparison to other concentric bracing systems.
Unfortunately, they are fairly expensive in comparison to the price of the $200 DVD player.
Running a traditional data center is expensive in comparison to a cloud data center.
Nonetheless, as one type of synthetic materials, ester is generally expensive in comparison to diesel and mineral oils (Friedheim 1997).
Another surprising result is that the value players (Sprint and T-mobile) are relatively expensive in comparison to the largest guys.
This part of your project may not be very expensive (in comparison to everything else), but it will consume quite a bit of time.
It is expensive but in comparison to the plants lifetime the cost is almost nothing, we are talking about a strong water-proof building - like a bunker.
Oh, and it'll be reassuringly expensive, even in comparison to other coming ultra-posh SUVs including Bentley's Bentayga and the Maserati Levante.
Currently, nearly all developing countries suffer from Internet connectivity that is expensive and slow, in comparison to developed countries.
While the settlements are expensive, they pale in comparison to the sort of legal bills that come with long — and embarrassing — legal battles.
First, we unravel the mechanism behind directed technical change, explaining why markets may underprovide innovations in expensive renewable technologies in comparison to innovations in energy-efficient fossil-fuel generators.
