Yes-
It's hard to compare systems because there are differences in quality, parts
used, and specifications. While the 15.6" might be cheaper here the slimmer
the system the more it'll likely cost as an example. It really is only fair
to compare nearly identical systems of similar quality. That gets a lot more
complicated unless you had a system from Apple and a system from us.
Just to give you and idea what I mean a 480GB SSD drive can double in price
depending on the drive used. The cheap drives are junk. They will die on you.
The more expensive drives are a bit better although they come at a price.