De or het koopprijsgrens?

The correct Dutch article is:

de koopprijsgrens

How to use koopprijsgrens

the koopprijsgrensde koopprijsgrens
this koopprijsgrensdeze koopprijsgrens
that koopprijsgrensdie koopprijsgrens
our koopprijsgrensonze koopprijsgrens
your koopprijsgrensjouw koopprijsgrens
every koopprijsgrenselke koopprijsgrens
which koopprijsgrens?welke koopprijsgrens?
a big koopprijsgrens / the big koopprijsgrenseen grote koopprijsgrens, de grote koopprijsgrens