A slide in range costs less than a drop in model.
Why are slide in ranges more expensive than freestanding.
For comparable functions a freestanding range is more economical than a slide in model.
Another advantage of the slide in range is that the top of the range is wider overlapping the countertop so it does not leave space between the range and the countertop.
While both types can be installed between cabinets freestanding ranges offer easier installation than slide in models and give you the option of leaving one or both sides exposed.
Supply and demand also come into establishing why slide in ranges are more expensive than freestanding.